A waiter in the hotel's catering department, whose professional name is the check-in desk, just puts the dishes on the table and recommends drinks. The things on the table are cleaned by themselves, and the other thing is to answer the guests' questions in time. Some etiquette hotels will also train the workflow, banquets and wedding banquets, which are generally simpler. Private rooms generally don't order, they are all reserved, and the dishes are simpler.