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Im 33 and I LOVE Princess... however, I am not the "party" type. For Alaska, I know PEB for one loves to cruise Alaska on Princess (I can not say, I have not been yet). Im sure he will weigh in on this post himself, he can give you TONS of info. Understand that Alaska naturally draws an older crowd no matter what line you go on. So you will definitely be in the minority age-wise. I think you will be pleased with Princess though, just dont expect the ship to be hoppin and jumpin.