We had a week at this site about 3 years ago although in low season. If you are comparing prices perhaps try the Brittany sailings where caravans go free i.e, Poole to Cherbourg (11am) sailing - it may make a great difference on price. We are sailing from Poole twice this year and will aim to get to the docks to sleep the night before. You can then either travel straight down to La Yole or break the journey with a one night stop at Haliotis, Pontorson, close to Avranches. There are some good supermarkets close to the site and the beach at St Jean de Monts is vast. The site has quite a few statics and is then laid out on the left hand side - very shaded and the right hand side, quite decent sized open grassed pitches - however there are some of these that are close to the play area and, even if you have children, may want to keep some distance away. The pool area with bar restaurant is very clean but may get very bust when the site is full. After looking around the camp sites in the area, this may be the better bet.