Paris - Do you always need reservations for dinner in Paris or for bistros and less formal places can you just "drop in"?
Sarlat - Recommendations for dinner? Not too expensive or formal. French food/food of the region preferred. Outdoor dining is always nice, but not required.
Eze - Dinner recommnedations - not Le Chevre D'Or . Not too expensive or formal, regional/tradtional french, perhaps outdoor dining.