By adjusting the variety and order of serving and the arrangement of selling vegetables when ordering, this problem can be alleviated, but it cannot be eradicated. It must be a lot of people's work, and one person will be very busy.

For example, the dishes that need to be fried now are put at the back, and the finished dishes are served first. You can recommend similar skewers (according to the number of bamboo sticks eaten, such as Hongya's Momazi Huayuan Chicken "Hey, put an advertisement") to serve first. He can eat if he wants, and he won't pay if he doesn't eat. In this process, the fried dishes can be cooked together. ...

Let them have something to do while waiting ... You can search the practice of fishing in the sea.