The class was co-ed, with a male instructor. When the club's capacity hits overload, it affects swimmers as well. Waiting in line seems to be part of the culture. I saw waiting in line everywhere. Another disparity Yuspeh observed was how particular the Japanese are about shoes.
Shoes are a big thing here.
No one is allowed to enter the locker room with shoes. You also have to wear special shoes in the workout rooms, shoes that have never been used outside. I wasn't allowed to enter the workout rooms because I didn't have special shoes on. Members are different, too. Everyone was extremely thin and they seemed to me to all have the same body build.