Generally speaking, the hotel has 6 sets of 1, which means that the guests have confirmed 6 sets, and there is still one set that is uncertain and needs to be prepared here first.

If it is in a restaurant, it means that guests need to prepare 1 table and reserve 6 tables (because the number of people can't be completely determined). If the guest consumes the prepared 1 table, it counts as money, but it doesn't count if it doesn't consume.