billy3,
First item - don’t ask about tips on the French side. TIPS are not typically a part of the French culture.
Everything I’ve ever read or known says that by French law a gratuity is figured into the menu prices so that French waiters are paid a decent wage and not dependent upon ‘tips’ to exist. Ergo no additional gratuity is required. If you feel your service was excellent you may leave a small additional amount for your server but IT IS NOT REQUIRED and the recommended amount - pour bois? (Sp?) - is usually cited as being enough cover a drink.
All that said, have at it Peeps.