Three generations, one itinerary.

The arithmetic nobody does before booking

Most multi-generational trips are planned by one person, usually the eldest daughter-in-law or the family office manager, and planned for an imaginary average traveller who does not exist. The average of a grandmother with a knee replacement, a fourteen year old who wants to jet ski, a principal taking calls from Mumbai at eleven at night and a toddler who naps at two in the afternoon is nobody at all. Build for the average and everyone is mildly unhappy: the elders are exhausted, the teenagers are bored, and the principal spends the week apologising to both. The families who travel well have understood something simple. You do not average the group. You stack the day so that each part of it belongs to somebody specific, and you protect the two or three hours a day that genuinely belong to everyone.

When our India desk takes a multi-generational brief, we start by writing down the group as a list of constraints rather than a list of people. Who cannot walk far, and how far is far. Who cannot skip a medication, and at what hours. Who eats what, and who eats nothing outside the family kitchen. Who has to work, and in which time zone. Who needs to nap, and who needs to be exhausted by four in the afternoon or the evening will be unbearable. That list of constraints is the real itinerary. The sights are decoration hung on it afterwards, and there are always more good sights in Thailand than a family can use.

The second thing we write down is the group's actual social shape, which families are often shy about stating and which determines everything. Some families genuinely want to be together for fourteen hours a day and feel cheated by any plan that separates them. Others are three households under one surname who love each other best at dinner. A brother and a sister-in-law may not be speaking. There may be a widowed grandparent for whom the whole trip is really about not being alone. None of this appears on a booking form, and all of it decides whether you take one large villa or two adjoining suites on separate floors.

Pacing: one anchor a day, and only one

The single most useful rule we know for mixed-age travel is one anchor per day. An anchor is the one thing that requires everybody to be dressed, fed, out of the building and coordinated: the Grand Palace, the boat to the marine park, the elephant sanctuary, the day at the wedding venue, the drive to Ayutthaya. One anchor is enough. Two anchors on the same day is where multi-generational trips break, and they break in a predictable order: the elders wilt at the second security queue, the children melt down in the car between the two, and the parents spend the evening managing the aftermath instead of eating dinner.

Around the anchor, the day should be soft on both ends. Mornings in Thailand are the good hours: cooler, calmer, and the temples and markets are at their most bearable before ten. Afternoons between one and four are for the pool, the room, the spa and the nap, because the heat in Bangkok is not a nuisance to be pushed through, it is a physical event that puts an eighty year old on a drip if you ignore it. Families arriving from Delhi in May sometimes tell us they are used to heat. Thailand's is different, wetter and more relentless, and the humility to sit out the middle of the day is what keeps everyone in the group standing on day five.

We also build a genuine nothing day into any stay of six nights or longer, usually the third or fourth. No anchor, no cars booked, no reservations before dinner. Families resist this in the planning stage and thank us for it afterwards. It is the day the grandmother finally sleeps properly, the teenagers find the hotel gym, somebody gets a haircut, and the group stops travelling and starts holidaying. On a ten night trip we build in two. The whole point of a private-office itinerary is not to fill the days; it is to make sure the full days are worth the empty ones.

Meals, and the discipline of the strictest eater

Food is where multi-generational travel most often goes quietly wrong, and it goes wrong because a group eats at the discipline of its strictest member, not its most adventurous. If one grandparent is Jain, or observing a vrat on the Tuesday, or simply will not eat outside food, then every shared meal is governed by that. Pretending otherwise produces the familiar scene: twelve people at a beautiful Thai table and one person eating plain rice with a spoonful of curd, visibly not enjoying herself, while everyone else eats guiltily around her. That is a planning failure, not a dietary one.

The workable structure is to separate the two kinds of meal. Guaranteed meals are the ones where the strictest member must be comfortable without negotiation: breakfast, and one main meal a day. Those we solve in advance, either through the hotel kitchen briefed three days ahead, a villa kitchen with the family cook running the Indian line, or one of the long-standing Indian rooms in the city, Rang Mahal at the Rembrandt, Indus, Maya at the Holiday Inn on Sukhumvit among them, where no onion and no garlic is an ordinary Tuesday rather than an event. Discovery meals are everything else: the Thai seafood dinner, the street food walk, the tasting menu. Those are for whoever wants them, and nobody is dragged.

The mechanics are worth stating plainly because the good hotels handle them well but only when told early. We send a written dietary brief before arrival covering pure vegetarian versus Jain, no onion and no garlic, no root vegetables where that applies, halal sourcing where relevant, separate oil and separate pans, and the specific vrat days falling within the stay. We ask for a named contact in the kitchen rather than a note in the reservation. We check that vegetarian breakfast is available at the hour the elders actually wake, which in a family on Indian time is often six in the morning. And we lay in the small comforts that cost nothing and matter enormously: good tea, khakhra or theplas in the room, a kettle, curd, and fruit that is not a fruit platter carved into a swan.

One more thing about meals in a big group. Book earlier than feels necessary and book fewer restaurants than you think. A table for fourteen at eight in the evening in high season Bangkok is a real logistical object, and the difference between a confirmed private room and a hopeful reservation is the difference between a family dinner and forty minutes of standing in a lobby with a tired grandmother. Where the group is above ten, we book private rooms or long tables at the hotel more often than not, and save the difficult restaurants for the smaller splinter groups who can move fast.

Transport, which is where the day is actually won or lost

Families budget for hotels and underestimate cars, and cars are what a mixed-age group lives inside. The rule we use is one vehicle per household unit rather than one large coach for everyone, unless the group is above twenty. A single big bus sounds efficient and behaves terribly: it moves at the speed of the last person to board, it cannot drop the grandparents home early, and it turns every departure into a headcount. Two or three vans with the same driver each day gives the family what it actually needs, which is the ability to split and rejoin without a discussion.

The specifics matter for elders. High-floored vans with a step are hard work for a hip; we ask for a lower vehicle or a running board for anyone who needs one, and we brief the driver to park at the entrance rather than the convenient corner. Journeys above forty minutes need a planned stop. Bangkok traffic between four and seven in the evening is not negotiable by cleverness, so we simply do not schedule cross-city movements in that window if there is an elder or an infant in the car. And in Bangkok specifically, the two best mobility tools in the city are free of traffic entirely: the BTS Skytrain, where the station has a lift, which not every entrance does, and the river, where a hotel boat or a chartered long-tail turns a forty-minute crawl into a fifteen-minute breeze.

The other transport decision is between one base and several. Our default for a first multi-generational trip is two bases in ten nights, not three or four. Bangkok and one beach, with the beach chosen for how it is reached: Hua Hin if the elders should not fly again, Phuket if the direct flight is running and the villa is worth it, Samui only if the group is small and patient with a connection. Each additional move costs a family roughly half a day and a great deal of goodwill, and packing fourteen people is not a task that gets easier with practice.

Parallel programming: the art of splitting well

The best multi-generational days are not spent entirely together, and the families who accept this early have better holidays than the families who fight it. Parallel programming means that between roughly ten in the morning and five in the evening, the group runs two or three tracks at once, all of them designed rather than improvised. A designed track has a car, a plan, a person in charge and a return time. An improvised track is four people arguing in a lobby about whether to go to the mall.

A typical Bangkok day for a group of fourteen might run three tracks. The elders take a gentle morning: a temple visit with a car waiting close by, a slow lunch, then the hotel garden and a massage. The children and one parent take the aquarium, the mall play floor or the pool with a nanny. The principals and the couples take the meetings, the tailor, the jewellers on Yaowarat or the shopping at Ratchaprasong. Nobody is bored, nobody is exhausted, and nobody has been made to feel like the reason the group cannot do something. Then everyone reconvenes.

Splitting works only if it is planned without hierarchy. The most common failure is a family in which the elders' track is treated as the consolation programme, the boring option for people who cannot keep up. It should be the opposite: the elders' track is often the best-designed part of the day, with the earliest start, the best light, the shortest queues and the most interesting company. When we build these itineraries we frequently give the elders the anchor sight and give the younger group the shopping, precisely because the temple at eight in the morning is a genuinely better experience than the temple at noon, and the grandparents deserve the better version.

Staffing the tracks is what makes them run. In practice that means a guide who is genuinely good with elderly guests and not merely fluent, a nanny or two for the children's track, a driver per vehicle, and one person from the office holding the whole day on a phone so that the family is not project-managing itself on holiday. Our guides to bringing or hiring childcare and to setting up drivers cover the mechanics; here the point is that parallel programming is not more expensive than a single group plan, it is simply better organised.

The shared evening, which is the whole point

If the day belongs to the tracks, the evening belongs to the family, and this is the part of the itinerary that deserves the most care and usually gets the least. Between about six and nine in the evening a multi-generational group is at its best: the heat has broken, everyone has had the day they wanted, the children are pleasantly tired rather than feral, and the elders are rested. That window is the reason the family flew together. Everything else in the itinerary exists to deliver people into it in good condition.

A good shared evening has three properties. It is close, so that nobody spends the golden hour in traffic. It is seated, so that the elders are not standing. And it has something to look at, so that conversation is optional rather than compulsory, which matters more than families admit when three generations are at one table. In Bangkok, the river delivers all three better than anywhere else in the city: a hotel terrace as the barges pass, a chartered dinner boat, or the walk along the ICONSIAM riverfront where the children can move and the grandparents can sit. On the coast, it is the beach at sunset with the tables brought down, or the villa's own long table, which is the format most families end up loving best because there is no audience and no closing time.

We also plan for one deliberately special evening per trip, and we plan it early in the stay rather than on the last night. Last nights are a trap: people are packing, tired and already half home. Night three or four, with the group rested and the trip still ahead, is when a family photograph is worth taking, when a private dinner with a set menu the kitchen has rehearsed lands properly, and when a grandparent's toast does not feel like an ending. If there is a milestone attached to the trip, a sixtieth, an anniversary, a retirement, our guide to family celebrations treats the production in full, but the timing rule holds regardless.

A worked ten-night shape

The shape is more useful than the specifics. Five real anchors in ten nights, two genuine empty days, one transfer, and an evening protected every single night. Families who try to run nine anchors in ten nights come home needing a holiday, and the grandparents, who are usually the reason the whole trip was organised, come home having seen more of the inside of a van than of Thailand.

What the office sets up before anyone lands

• Rooming confirmed by room number in writing, with connecting doors and same-floor allocation rather than a request in a booking field.
• A written dietary brief to a named person in the kitchen, three days ahead, covering Jain and vegetarian lines, vrat days and breakfast timing.
• Vehicles allocated per household with the same drivers throughout, and mobility needs stated to the transport company rather than discovered at the kerb.
• Medication list, treating doctor's contact and insurance details held by the office, with the nearest private hospital identified and the route timed.
• A children's plan: cots, high chairs, a vetted nanny for the evenings, and the indoor repertoire ready for the afternoon it rains.
• One page in everyone's hands with the day's tracks, times, drivers and phone numbers, reissued each evening for the following day.

None of this is glamorous and all of it is the job. A multi-generational itinerary that works looks, from the inside, like nothing much happened: cars appeared, food was right, nobody waited, and the grandmother who was nervous about the trip is the one asking when the family is going back. That is the standard we hold, and it is built almost entirely out of the unspectacular things listed above.

Opening hours, temple dress rules, boat schedules and hotel facilities change with the season, and entry requirements change without much notice. Confirm current details with each venue and hotel directly, and verify visa exemption, extension and TDAC arrival card requirements with the Thai Immigration Bureau or the Royal Thai Embassy in Delhi before travel.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.