this is a marketing strategy. with the improvement of people's living standards, people's demand for high-quality catering has also increased sharply, and some high-quality catering shops or enterprises have also developed. Some good food and beverage outlets are often in short supply during the peak period of customers, and people need to wait in line for meals. In order to reduce people's anxiety and unknown feeling of waiting in line, the store lets the people waiting in line know what number they are and how many people can turn ahead, giving people clear hope in waiting and improving consumer satisfaction.

the principle of first come, first served can be realized through numbering, which embodies the fairness of consumers, creates a fair and just consumption environment, and enhances consumers' satisfaction.