For dinners, you will have way too many options but here are a few that you should really try:
Gastronomical:
– Chèvre d’Or in Eze Village
– Grand Hotel du Cap Ferrat – Le Cap
– Le Louis XV – Alain Ducasse in Monte Carlo
– Le Grill in Monte Carlo
– Hostellerie Jerome in la Turbie
More casual:
-La Petite Maison in Nice
-Cipriani in Monte Carlo
– Cantinetta Antinori in Monte Carlo
– Rampoldi in Monte Carlo
– La Vigie in Monte Carlo for lunch
– Les remparts in Eze Village at Chevre d’Or for lunch
For dinner/parties:
-Sass Cafe in Monte Carlo (dinner and party)
-Jimmy’z club in Monte Carlo (eat before at Coya just above)