There are three main active clubs at Cannes. They are:
Aéro-club d'Antibes (
http://www.aeroclub-antibes.com)
Aéro-club de Monaco (
http://www.aeroclub.asso.mc)
Union Aéronautique de la Côte d'Azur (
http://www.aeroclub-uaca.org)
All friendly, all well-established. Worth taking a look at the websites to give you an initial impression. If you want more flavour, feel free to contact me directly.