Linda French side usually has serve complete, as erb923 stated "a living wage" then if the waiter did something beyond expectations one leaves a pour boîte , a little bit more if you wish.

When we dined at La Cigale last year we had parked across the street and hubby happened to ask if that was okay. Waiter replied "mon dieu mon ami is not good, I will move the voibure for you." And he did , so hubby gave him a $10. happy to not have to walk again to move the car. Then after we ate we added a bit more to the bill.