Why are the husband and wife being called "shameless" when they live in a hotel and pack breakfast coupons?

This event happened in Hangzhou.

A couple stayed in a hotel in Hangzhou because of a business trip, and the hotel provided a buffet breakfast, but the buffet breakfast was not inside the hotel, but in a nearby restaurant called Huiwei Dining Hall. On the day of the incident, it was mainly because Fufu and Fufu took breakfast coupons to pack rice in order to catch up with time, but they were shamelessly scolded by the waiter. The couple had been doing this for several days, and no one said anything, but in the morning, he took four buns, three eggs and some other porridge, and then used the breakfast coupons to check out as usual, but the waiter said that breakfast coupons could not be packed. The couple felt very strange. Then the clerk insisted that no food could be brought. The couple argued with the waiter, but there was no result in the future, so they put down their breakfast and left. I didn't expect to hear the person in charge of the restaurant say something when they left, which was very irritating. Through specific investigation, we found that the breakfast coupon was valid within five days, and it did not say whether it could be packaged. After understanding, it was the pastry chef who swore. No matter what the couple did wrong, it was always wrong to swear. After understanding, when everyone asked the pastry chef why he swore, the pastry chef said that the couple had packed a lot of things and took seven or eight steamed buns, and they took a lot of them. The buffet was free to eat, but they could not take so much away. Then the couple told the pastry chef to shut up. But the couple denied what the pastry chef said. He said that he didn't take so many things, and there was no monitoring at that time, so it was impossible to know which one of them was telling the truth. After all, it was fair and just, and the old woman said that the old woman was right. Although the breakfast coupon doesn't say whether it can be packed, it's just our common sense that the buffet is not allowed to be packed as far as possible. After all, the buffet is unlimited, and it will be unfair to other guests if you pack it and take it away. Finally, the pastry chef apologized to the couple. To be honest, I think this problem can be avoided. For example, if the couple can get up early and go to a restaurant for dinner, this will not happen, or if the pastry chef explains it to them, it will not be possible to pack so many two parties and communicate a little, so there will not be such a big trouble.