Japan does not advocate packaging, just to prevent the health of customers from being affected by food deterioration. After all, after the food is packaged, the ingredients in it may indeed deteriorate over time. The original good ingredients have been exposed to the air for a long time, and the original healthy food will affect your health. In this case, it is even worse for customers. Obviously, they just want to have a meal, but they feel uncomfortable, so they simply ask customers not to pack. And Japanese cuisine pays great attention to its own quality. Their food was delicious when it was just cooked. If you hadn't eaten it in class, the taste of that kind of food might not feel like that. Therefore, if a customer wants to pack it, but takes it back and finds that the taste has changed, it may be self-defeating. After all, everything tastes better if you eat it on the spot. If you take it back, the customer will feel bad and may not want to come in the future. In fact, the catering industry in Japan is not good either, and many complaints are received every day. If customers are allowed to pack them back without authorization, the store will be responsible for those customers who complain about eating bad stomachs. In order to avoid the responsibility of this trouble, the Japanese simply advocate that customers eat in the lobby, otherwise they would rather throw away the leftovers directly than be complained about the deterioration of food, which will not only affect the image of the store, but also affect the efficiency. Anyway, it's troublesome, and the Japanese are also notoriously afraid of trouble.
Therefore, the Japanese do not advocate packaging, not that they can waste it at will, but that they are too lazy to deal with those complaints themselves. But if you insist on packing, you can do so as long as you sign the agreement.