Busiest holiday time tends to be btw 14 July and 14 August. And the busiest sites will be the biggies, especially the coastal ones and ones with attached water parks and other attractions. I personally would avoid them then but thousands of people seem to have al lot of fun every year!
We've never been in peak season but end of August (18th ish onwards) is fine. We went to L'hirondelle last year, arriving 20th Aug and it was wonderful. Very out of the way but beautiful and peaceful with enough going on to keep the children happy. Not great for older teenagers as no disco or youth activities but perfect for toddlers and active primary age kids.
We're going to a big Italian site this year for the first time but have deliberately made it the last week of our holiday at the very end of Aug in the hope that it will be slightly less frenetic - Park Albatros.
We bought camping gear last year and camped a few times last year and only once so far this year. Each time we've camped I have swung madly from, 'I love this and we should camp for the whole of August next year!', to 'what on earth are we doing'!
A friend has suggested we camp with them next summer in France and I wondered if I can have some honest opinions on what the larger sites are like. My friend likes the large sites with lots going on.
So....in the Eurocamp brochure, the pools look fantastic. My kids would adore them. But, in the pictures there is no-one there! In August, are they completely packed and unpleasant? With kids having to be assertive to get a go on waterslides etc? I've seen a few photos on tripadvisor which look pretty grim.
What I would ideally like is a smallish, laid back site with great pools with space to move. Does that exist?