Ground floor access matters more here than on a standard family trip. If grandparents are less keen on stairs, check unit layouts before booking rather than after, since not every caravan or lodge is single-level, and a quick question to the park before you book saves any awkwardness on arrival.

There isn't one single answer to how far ahead you should book, because it depends heavily on when you actually want to go.

As a rough guide: book six months or more ahead for summer holiday weeks, two to three months ahead for half terms and bank holidays, and anywhere from a few weeks to a couple of months ahead for a standard term-time week. If you're flexible on exact dates, you can comfortably push closer to the wire; if you're fixed on a specific week, particularly a school holiday one, earlier is always safer than later.

For more detail, see dog-friendly caravan holidays.

Food shopping on arrival, rather than eating out on your first night, is a small habit that adds up over a week. A single supermarket shop covering breakfasts, lunches and a few home-cooked evenings, topped up with the odd meal out as a treat rather than a default, keeps a self-catering break comfortably within most budgets without anyone feeling like they went without.

On the budget side, self-catering works in your favour with a bigger group. Cooking most meals in the caravan rather than eating out as a party of eight or ten keeps costs sensible, and splitting the shopping and cooking between the adults spreads both the effort and the spend. A shared static caravan holiday, or two units booked close together, usually works out considerably more cost-effective than the equivalent number of hotel rooms plus regular restaurant bills.