If I have unlimited data plan is it safe for me to use my bridge on a cruise?
No. I cruise a lot myself and had to find out. You still have to buy one of the cruise ship's expensive data packages and pipe it to your playbook thru the berry.
Unfortunately the cruiselines havent arrived to the port of the 21st century. All it takes is the first cruiseline to offer, say, the first 500 megs free or whatever, and then the competition is on and there will be free internet on the ships within a year or two.