I don't know how many of you are aware of this...I may just have been clueless...but if you pre-book tours FOR ANY PORT ON THIS CRUISE, you cannot apply your credit to tours. You can only apply your credit to tours if you sign up on board. I am going to wait to sign up for my remaining tours til we get on board in order to use up our credit. I may even cancel and resign up in order to use our credit.