for the protection of merchants, most restaurants in the catering industry will not allow customers to bring their own food, or charge a certain service fee for the food brought by customers.

When customers enter KFC, they are free to enjoy all the public resources in the store, such as seats, air conditioning, toilet use, free napkins and sauces. When customers eat take-away food in KFC, their food consumption in KFC will be reduced, and some foods with strong taste will affect the dining experience of other customers in KFC. At the same time, the garbage generated by eating food is cleaned by the clerk, and eating take-away food will cause additional burden to the clerk's hygiene and cleaning work. So KFC doesn't allow customers to eat takeaway food.