Your credit card needs to be linked to your onboard account, meaning that's what you set up when you checked in for the cruise. Then you will sit at a slot machine and insert your SetSail pass.   Select ACCOUNT. Then select PERSONAL BANKER. You will be asked for your PIN number.  If you haven't set one up then it will default to your birthday as MMDD. You will then select TRANSFERS. Select ROOM CHARGE. Then you can select a p