Topless sunbathing for women is permitted but nudism is not. The only naturist beach in Cannes is on the "Pierre Plates" beaches on the eastern point of the Ile Sainte-Marguerite on the Ile de Lerins.
Barbecues are forbidden.
Dogs are forbidden on all beaches.
The two non-smoking beaches are Bijou plage and plage des Rochers (La Bocca).
On the five beaches with beach volleyball it is forbidden to play between midnight and 8am.
It is forbidden to stroll along the beach to sell things, whether items or services such as massage. Yet, it happens.
There is no camping or sleeping on the beaches (at night!)