My grandpa has paid for the entire family to go on this cruise. He also wanted us all to use him credit card number for all of our on board expencise. His only request was we 1. Dont purchase booze on his card and 2. dont buy the boat I wanted to buy things for my neices and nephews on my husbands side of the family and didn't feel comfortable with him picking up the tab for there gifts. I also wanted the option to have a drink or two if I felt like it. Im not a big drinker (one or two drinks during the whole 4 night cruise would do me just fine). So because of that I set up my own account. He understand but still wants me to put somethings on his account (excurtions, tips, souvenirs, nursery time, spa teatments...) He had wanted to provide us all with an all expence paid vacation and I know he will be upset if I dont do excurstion because I cant afford it on my account. Is there anyway to pay for something with my card and some with his? My mom will be rooming with me and her key card is tyed to his. Could I use her card to pay for somethings or will excursion, babysitting, spa... be automaticly billed to my card since I booked them? When are things charged to your card? I have booked a few things online if that matters.