I've been going to France for holidays since 1992, firstly in caravans, and lately in gites (kids grown out of coming with us).
Most sites have swimming pool complexes, play areas, bars, takeaways, etc, and are of a far higher standard than the UK.
Been with the following companies;
Haven Europe (now Siblu)
Eurosites (think now part of Eurocamp)
Matthews Holidays
Letsgo2France
The last company was the most reasonable with regard to both price and quality, as the owners live in the Vendee and regularly visit their clients to see if any problems.
Not been down to the south of France, but have been to all regions from Picardy down to Biarritz on the west side, and the Limousin/Dordogne regions. All are different, but the pace and quality of life is sooooo much better than the UK.
Try it, you'll enjoy it wherever you go.