When you check in, the front desk swipes your credit card and leaves an open balance on your room account. Any purchases you make throughout the week on your room charge card, or via your room (telephone, room service, valet parking, etc.) are put to your room charge account. On the last night of your stay you will receive a sheet reviewing the charges tyou have made on your room account. If everything is o.k., then just pack your bags in the morning, take your room key.charge card with you, and leave the hotel. Your account stays open until midnight the night you check-out. After the account has closed, the hotel charges your room charges to your credit card.