It's been a while, but we went every year when my DC were toddlers.
Don't know the site mentioned in the OP, but these were my criteria:
Not too long a drive - Brittany or the Vendee are lovely in June, not too hot, so not too much faffing with hats and suncream.
Check out all the operators and see what facilities they offer.
A stairgate on the mobile is handy, to stop the DC falling out of the door and down the steps. Some toilet blocks have baby baths available, if your DC won't go in the van shower.
Paddling pool is handy. If it's heated, so much the better. Also good place to meet other people with toddlers.
Some of the operators have kids clubs geared to toddlers in June/early July. You have to stay with them, but they usually have lots of play equipment, craft stuff etc. that you can use.
We found that going in late June, there were quite a few Irish visitors with children, as the schools break up earlier.
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thomson
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