This is the basic business service of restaurants today. Diners will directly go to the restaurant to select the food and be served by staff. The mission of the restaurant staff is to bring customers the best quality of service (food, manner - service attitude, ...) to make customers feel satisfied and happy.
If the quality of service is maintained, the restaurant will have a loyal customer base. If the service quality of the restaurant is better and better, serving "beyond the expectations of the customers", the customer will become the "voluntary advertising staff" for the restaurant. Therefore, maintaining and upgrading better service quality is extremely important when serving customers directly at the restaurant.