Nudism
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
Barbecues are forbidden.

Dogs
Dogs are forbidden on all beaches.
 
Smoking
The two non-smoking beaches are Bijou plage and plage des Rochers (La Bocca).
 
Beach Volleyball  
On the five beaches with beach volleyball it is forbidden to play between midnight and 8am.

Sales
It is forbidden to stroll along the beach to sell things, whether items or services such as massage. Yet, it happens.

Camping
There is no camping or sleeping on the beaches (at night!)