what do you call the owner of a restaurant
Restaurateur A restaurateur is a person who opens and runs restaurants professionally. Although over time the term has come to describe any person who owns a restaurant, traditionally it refers to a highly skilled professional who is proficient in all aspects of the restaurant business.
Waiter Rule The Waiter Rule refers to a common belief that one's true character can be gleaned from how one treats staff or service workers, such as a "waiter".[1] The rule was one of William H Swanson's 33 Unwritten Rules of Management, copied from Dave Barry's version "If someone is nice to you but rude to the waiter, they are not a nice person."[2]