In reply to andy foers:
You may struggle to find a camp site open at this time of year.
Have you considered staying in a Formula 1? Price wise there's not much difference between them and camping, and well worth it to avoid the hassle of erecting and taking down tent. They are basic but clean (you can get a private room for 2 or 3) and have shared showers and loos, and most do a Continental breakfast.
There are loads to choose from (look on line), but the one at Chalon sur Soane breaks the journey nicely. I stayed there last year going to and from La Grave.
Good luck.