What do you think the tourist attractions sell best?

Personally, I think it's best to sell water for dinner at tourist attractions. After all, people don't want to bring too much food and water when visiting tourist attractions. In those popular scenic spots, most of them play for half a day or even a whole day, so it is definitely not enough to bring water and food, especially when the water is heavy and takes up space. In this case, even if someone can go hungry, it is absolutely impossible without water, so selling water in tourist attractions is the most popular.