I posted this exact question several months ago and got a great response. Obviously it's a sore subject for many people. Our first cruise was a disaster, hair wise. However, the last cruise we took was much better. I think the weather was better (not so humid) and I think the outside cabins have a little more air circulation allowing my thick hair to dry easier. I really prepared the second time - if you have thick wavy hair, invest in some really good frizz control gels. (I think Frizz-Eaze is the best). I just gave in and went for the curly look. If I had tried to blow it out straight it never would have stayed that way anyhow. I'm letting my layers grow out so next year I should be able to pull it up. Good luck.