Do I need to pay with my hotel room card?

No need. Because the room card is the key to the card door, there is no charge for the hotel room card. The room card is an accommodation voucher printed by the receptionist with the words "Welcome" after the guests check in, so the room card is also called the welcome card. Its main function is to prove the identity of hotel guests and facilitate guests to enter and leave the hotel, so the room card is also called "hotel passport"; Guests can get the room key with this card when they come back from going out, so the room card is also called a key card.