I went on a cruise last year and took two bottles of bacardi…it was incredibly easy to get it on board too… i just checked my bags on the airplane, no hassle there, and then left it in my suitcase and walked right on the boat. and you know what? i didnt drink one drop from teh alchohol i brought with me so it was a waste of time … you dont feel like running to your room or trying to find coke to mix it with the whole time your on vacation so you end up just buying your drinks anyway… id just take more money with you and relax…its vacation