In the past I have always taken my tux and a dark suit. The tux was for the first formal night and the suit for the second formal. However, my tux has strangely shrunk over the years and no longer fits well. I had no idea dry cleaning would cause this . Since I just went out and bought several new suits I think I'll ditch the tux and just take suits with me for future cruises. I just couldn't find a good enough reason to buy a new tux.