It seems like a deal at first. But once you add on stuff like a flight to the port, decent room, "extra charge" food etc. it doesn't look so amazing. It does seem fun, I just would rather fly somewhere in a few hours and be there for 5 days instead of being on a ship for 3 days and at the destination for 2 if the cost is the same. Different strokes.

This is a good YouTube channel with in depth ship tours that gives you a good idea of what it'd be like https://www.youtube.com/channel/UC9j-uA9gV2B9nIX3lPaLsKQ