1. Never eat alone.
2. Never just order one dish.
3. Never expect young people to give up their Metro seats to older folk.
4. Never expect to be treated nicely by Parisians.
5. Never wear sneakers or chinos.
6. Never talk politics.
7. Never talk money.
8. Never cut cheese across its tip.
9. Never go on time to a restaurant or home.
10.Never go to a fancy restaurant in a black tee-shirt.