I don't really known any of the artists playing there or where Rivolet is for that matter.
Its founders started back in the 90's with the idea of bringing culture to the countryside.
In bucolic surroundings, a river runs through it, the Dindes Folles offer 3 days of Clowns, Music, Dance and Theater.
No Glastonbury here, no stars, just talented people letting their creative juices flow.
I was told that another French festival with a human face is La Renverse in my native Morbihan, (August 13 and 14) not far from the ocean, 10 artists and bands, 5 per day... plus local beers, crepes, mussels, no junk food it seems.
Neither Dindes Folles nor La Renverse will bust your budget.
(*Note that the sites for both Festivals are in French only)