A resort holiday with three generations sounds easy. One property, meals included, activities for everyone. In practice it is a negotiation between different sleep patterns, budgets, energy levels and ideas of what a good day looks like. The families who enjoy these trips are rarely luckier than the rest. They plan the awkward parts early and agree on a few rules before they travel. This guide sets out the decisions that matter most.

Agree on the purpose before the destination

Ask each household what they want from the week. One may want rest, another adventure, a third a chance to see relatives. If the answers conflict, say so now rather than at the pool on day two. A group that agrees on a rough shape, such as two shared dinners, one group outing and everything else optional, is far less likely to fall out than a group that assumes everything will be done together.

Choose a resort that can hold different needs

Look for a property with several pools, a kids club with published age bands, quiet areas for adults and restaurants that cater for early and late eaters. Our list of resorts that publish their kids club ages is a good place to start, and our guide to what a resort fact sheet tells you shows how to check the details. If anyone has mobility needs, look at what the resort says about accessible rooms and routes, and ask for specifics, not general assurances. Our overview of resort accessibility explains what operators usually publish.

Think carefully about rooms

Room layout shapes the whole trip. Options include adjoining rooms, connecting rooms, rooms in the same building and family suites. Connecting rooms are not always guaranteed even if you request them, so ask whether they are confirmed in writing. Grandparents who go to bed early usually prefer a quieter building, while families with young children often like to be close to the main pool and restaurant. A mix of buildings, close enough to walk between in a few minutes, often suits better than one large block. For more on category names and what they mean, see what resort room category names actually mean.

Be open about money

Money causes more tension than any other issue. Decide early who is paying for what. Will one household cover the group’s rooms, or will each pay its own? Will the group split the cost of an excursion or a special dinner? Different budgets are normal, and a plan that lets each household choose its own room category while still sharing the same resort tends to work well. Write the agreement down, even in a message thread, so there is no confusion later. If tipping and extras come into the plan, read our guide on how tipping and gratuities work at all-inclusive resorts so the group has the same expectations.

Plan the days, loosely

A schedule that is too tight makes children and older relatives tired and irritable. A schedule that is too loose can leave everyone drifting. Aim for one fixed point each day, such as a shared breakfast or an evening meal, and leave the rest open. Book popular restaurants early, because reservation systems at big resorts can fill up quickly, and check how the resort handles a la carte reservations before you arrive. Build in rest time in the middle of the day, when heat is at its peak.

Excursions are the part that most often goes wrong. Choose outings that suit the least mobile or youngest member, check the physical demands, and ask whether the operator has experience with mixed-age groups. Our article on whether to book through the resort desk or an independent operator covers the trade-offs.

Prepare for health and documents

Gather everyone’s documents early. Check passport validity, entry requirements and any consent letters needed for children travelling without both parents. Bring copies of prescriptions in their original packaging, and check the destination’s rules for any medicine, as outlined in our guide to carrying and declaring prescription medication. Take out travel insurance that covers everyone, and check the age limits and pre-existing condition terms for older travellers. It is also worth agreeing in advance what the group will do if someone is unwell, so a single illness does not cancel the whole week.

Keep a few rules light but clear

• Everyone gets time on their own, with no guilt.
• Meals together are a goal, not an obligation.
• Mobile phones stay off at shared dinners if the group agrees.
• One person acts as a contact for the resort, to avoid mixed messages.

Small agreements like these are easy to make before the trip and hard to make once tempers are frayed. With a sensible resort, realistic expectations and a little structure, a three-generation trip can be the most memorable holiday the family takes.