The cruise ship was Oasis of the Seas (Royal Caribbean). There is a cafe (not the dining area or Windjammer) where it is acceptable for men to wear shorts for breakfast (I don't know about after 5:00pm). However, sleeveless shirts on men are not permitted. The reason for this I was told was because of men's underarm hair that may land in someone's food. I never wear these kind of shirts. However, my girlfriend's son came into the cafe one day and was told to leave because of the sleeveless shirt he was wearing. I certainly don't want anyone's arm hair, or hair from anywhere in my food, but isn't it more likely that hair from someone's head, particularly long hair is more likely to land in someone's food than from someone's underarm? Also, some men shave under their arm, should they be permitted in? Also, what about many european women who do not shave under their arm annd wear sleeveless tops, should they not be permitted in?