I am going on a cruise for spring break in which the gambling age is 18, I will be 18 the week AFTER i get back from the cruise. The cruise is on Norweigan and I was wondering if a fake i.d. would work, but I've read that they check your room key for age, is that true? Also what if i just registered for the cruise with all my brothers information and documents (who is 23), we look alike but he is 5 inches taller than me. Thanks. (please don't respond saying "just enjoy the cruise and you don't need to gamble").