12. Don’t Blow It
Remember the dating rule that you can tell a lot about a person by the way he treats the waitstaff? Well, leaving a bad tip can be a first date deal-breaker.

13. Large Parties
For parties of six or more, a gratuity may be automatically included in the bill. Be sure to read your receipt carefully or inquire if you are unsure about whether the gratuity is included. Of course, you are always welcome to leave a little extra to reward excellent service.