I hate being in an enclosed space where I feel I have no control over and feel helpless if something bad ever happens, so I would not personally enjoy holiday at sea. Humidity is another problem for me, so there's another reason. Yet another reason is I can't swim, and if the boat ever goes under I'd hate the feeling of waggling my legs blindly under water not know what might come and take 'em away. The jaws of death, ack!!
I go to Vegas mainly because to meet up with relatives and enjoy the people, the beautiful rockies, the night life, the food,and the entertainment. I guess I'm just hooked to that place. Been there 13yrs ago, been back several times. Now even want to move down there.
I get the same uneasy feeling being in a cruise boat as I do in a plane. And no, I am weary of planes WAY before 911 ever occured. Its just a natural thing for me.
But if its going to be your wedding anniversary, and you want to do something special, memorable, and romantic, then yes a cruise is more suitable? Just my opinion, please don't hurt me...