Looking to head to Ailefroide in early September, been before but not for about 10 years. Do you need to book or just turn up? I had a quick look on the website but couldn't see.
It will be very quiet then if it's not school hols, might even be shut...I was there a week after the holidays a couple of years ago and the campsite was open but deserted and most of the shops had shut for the season.
To the OP, their website says there's no need to book. But I'd recommend you contact them to check if/when they close for the season. http://www.ailefroide.fr/camping/