You also need a faked ID upon check in with the same name as the cardholder. But overall, using a faked Credit Card in a hotel is one of the easiest ways to get busted. Novells are quite popular. Most of them are 7e1 at slow speeds. I won't say more about reservation systems here.
Many hotels have good and relatively expensive restaurants and discos.
They just require you to sign the check with a room number and full name. If you know of a guest that is checked in and has secured his account with a credit card who just checked in, just use his name and room number - this is probably the biggest lack of security in a hotel. Also if you don't stay at the hotel but want to go to their disco at night, pretend to be a guest to get in free and save cover charges. They usually believe you. You've read right, hotels are favorite places to make love.