We always secure our sign and sail with cash. That way I can better monitor our spending. I put 100 to start on the card. That covers our tips. If I decide to use my card more then normal I can at any time add more money to it and it is instantly updated. Works for us.
Thank you all for your answers. Yes Dwayne, you were thinking right,I am going to pre-pay the shore excursions and figured since I was doing that why couldn't I just keep adding to it to put on the sign and sail. But I guess it doesn't work that way. Macmom I too have always used cash just so I won't over spend on the credit card, I don't even take it with me. lou