Monetary transactions on cruise ships function differently than what you are likely used to on land, but the good news is that making purchases and monitoring your spending while cruising is very simple and straightforward. There are a few important things you need to know. Cruise ships are mostly cashless Cash is not accepted on cruise ships to make purchases, and carrying cash is also not necessary for tipping service staff. All purchases and charges are facilitated through an onboard account that essentially functions like a credit card. Charges are posted to the account, and you are obligated to pay off the balance later. When checking in for your cruise, it is essential to register a credit card that will be directly linked to your onboard account. At the end of your cruise, your credit card will be charged for the amounts owing in your onboard account. When making purchases on the ship, all transactions are processed by using your key card, or in the ...