What does it mean to pay the hotel bill?

It just doesn't match the reserved room, and there is a price difference.

There are several ways to check out when you check into a hotel:

1 If you want to pay the full room rate in advance when booking a hotel, you will be asked to pay a cash deposit or a credit card deposit when you arrive at the hotel. Just return the room card when you check out, and the room rate and consumption will be settled together after rounds. After deducting consumption, the deposit will be refunded more and replenished less.

If the front desk pays cash directly, the check-out card will do. After the rounds, the room rate+consumption will be settled together. After deducting the room rate+consumption, the refund will be more and the supplement will be less.

Pre-authorization of credit card As long as the room card is returned, the room rate and consumption turn will be settled together. The hotel will re-swipe the card according to the actual situation, complete the pre-authorization, and directly deduct the fees payable. Then if you need to issue invoices, receipts or consumption lists, you can directly ask the front desk for them. Note that there is no such thing as an invoice abroad, only a consumption list.