"Do not take an empty plate from one guest while others are still eating the same course."
"Never remove a plate full of food without asking what went wrong. Obviously, something went wrong."
"Never reek from perfume or cigarettes. People want to smell the food and beverage."
And so on. Even though the item focuses on so-called "front-of-the-house" workers, that's still a part of the culinary arts. Indeed, most culinary arts programs include a class on dining room management.
So, what about you? Do you have any restaurant pet peeves?