Check out Verizonwireless.com. They have cruise ship packages that you can sign up for. Just be careful because you may have to call to cancel upon your return. I remember seeing it when I was looking up international plans for my husbands trip to Paris. I know I will have to cancel the international plan upon his return so I'm assuming the same for the cruise ship plan. I know it's not the ideal way to find out information, but last year when my son got sick and hospitalized, our first trip without kids, while my husband and I were cruising the Mediterranean, I communicated by text message with my family. The texting rates aren't bad and texts seemed more reliable than phone service. My husband had international phone service on his company phone, but we had a lot of trouble finding a spot on the ship where we could get reception, but text messages always came through and were sent without problems.