According to an etiquette expert, diners at high-end restaurants should never show up late, disregard the waitstaff, or forget to leave a tip.

Dining at a fancy restaurant can be intimidating because of all the subtle unsaid rules that are meant to be followed. While a lot of dining etiquette is a form of courtesy, some rules are meant to ...

This one's for the celebrating, the sponsored, or for the boss who doesn’t care what it costs.