I have actually been on one of these cruises. We sailed on Oasis Of the Seas, one of Royal Caribbean's largest and most luxurious ships. I love cruises anyway, we have been on several. This Poker Cruise was the absolute greatest experience of my cruising life. They brought their own dealers, as you say, and tables and
chips and everything else you need. The poker room usually opened at noon if I remember correctly. It was run like a regular poker room. They had seminars about poker. Everyone was very nice.
The poker was NLHE and I don't know the blinds, cause I don't play NL. They also had 2/5 and 5/10 fixed, which I do play. And Omaha 4/8 fixed. I am sure they would have spread anything the players wanted. They have a core group of players who know each other and the dealers know the players. This could have led to a clickishness, but it did not. Everyone was very friendly and welcoming to us. We loved it. And also went home with at least $600 in winnings.
The best part about this trip was that I won it in an online
poker game!!! I would never have done this if I was paying for it, because I don't like to spend money on the unknown. But now, I would love to do it again. The Alaska trip sounds wonderful. Go for it.