We are also going for 2 weeks commencing Whit Bank Holiday and will be having a week half way through at La Yole. This site is in the Caravan Club Travel Service book, Camping Cheque book and others. I think it is slightly north of Les Sables but there are many sites around that area. We usually also look at the sites in the Eurocamp and Keycamp Independent books and go on the campsite's web site to check it out. However some of the sites do have quite a high static presence and the camping area can be an afterthought. We have very rarely been disappointed with any site in the Caravan Club with the exception of Le Bolee D'aire (vendee) approx 3 years ago. The bottom of the pool weas green and the toilet blocks were not light during the evening. This may have changed following member's feedback reports! Another good site (we thought) on the Atlantic coast was Sequoia Parc - a member of the Castels chain. You may be put off by the size of the site however at Whitsun - early June the site is only half full if that. Plenty of things for children to do and a brilliant pool complex. Not far from Royan / Rochefort for days out.