My brother signed on as a sous chef on Holland America some years ago. He was not at all happy. He reported a lot of the other males in the kitchen were bothering him... made him very uncomfortable. Ultimately, he jumped ship. This was a long time ago, though. He also said the work was more like a factory than a kitchen.
I don't know dued I have heard nothing but horror stories from guys I have known who have done it. Packed like rats in a cabin 18 hour days seven days a week no time off the ship I think there is better options out there like a hotel that would do the same for you.
I have a fear of being stuck on a boat full of people I didn't like which keeps me from booking cruises as a vacation option much less having to work. One of the waiters who is going to cooking school thought it would be neat to work on a cruise ship during his internship. I had him think very clearly about that one.