Rule
1. Discriminating against or making any insulting statement about someone else’s religion or ethnicity is against the law and could be punishable as a hate crime.
2. You must be over the age of 21 and you must have an identification card with a photo to buy or drink alcohol.
3. In most states, it is illegal to buy cigarettes if you are under the age of 18 and often you can only smoke in certain places.
The restaurant
1. In a restaurant, the server is usually very friendly and helpful and often will tell you his or her name.
2. When the service is good, tipping is expected to be 15–20% of the bill.
3. Polite Americans eat with one hand while the other one is under the table on their laps.
4. Do not wipe the plate, spoon, fork, in a restaurant, whether luxury or just plain, elegant or because it is considered bad manners. If that not clean will change anymore.