I'm not familiar with Princess per se, but with other cruise lines you can change your default CC. I believe they'll run the previous charges through at that time as a soft charge of sorts and then allow you to charge your next items on the new CC. If Princess is similar to Royal C. or Carnival then please be sure to play 1 or 2 hands at that slot machine before cashing out to save the fee. If you don't, they will likely suspend your account. It's up to the manager on whether they'll reinstate that privilege, but even if they do it's typically done as a one time thing. To avoid that nonsense, just play a couple of hands even if at the lowest amount. You can choose a penny machine if you want and play a whole nickle's worth to avoid that hassle.