Nice vs. Cannes
In a nutshell, the attitude, close in parking and service, and lack of 'Nice-ness' make Cannes a better choice unless any restrictions apply (PPL, parking, WX, etc). I've been to both several times and much prefer Cannes as they seem to be more helpful and attentive. Nice handlers seem to have an attitude that I can do without if able.
Cheers,
1 Bingo