Pack sensibly
A camping holiday with children means you need to have a lot to hand. Food and snacks, including drinks, are essential; bring along flasks and ice boxes if necessary to help with perishable elements. Face wipes are a good plan too, particularly if you’re going to do camping classics like roasted marshmallows.
Lots of clean clothing is necessary, even if you don’t end up using it. Pack warm layers, and make sure kids are rugged up well if the weather is turning a bit cool or evenings drop to unexpected lows. Make sure you have enough nappies for toddler-age kids, and check out your campsite’s disposal options and changing facilities. Games and entertainment are also necessary, even if you want to plan day trips that will tire them out totally, or if you're trying to keep the little ones entertained if the weather turns. They may not use the things you’ve brought, but they’re good back-up for boredom.
Make sure you have the right tent and accessories. Plenty of space is helpful; you don’t want to be treading on your children or have them crawling across you when you’re trying to sleep. A blow-up mattress is comfortable for sleeping kids, and an outer protected area — where you can store food and hang wet clothes to dry, so that they don’t drip all over your bedding — is also a good plan.