It changes based on the ship and what shows are offered, but I can give a general answer about Cats because I was just on Oasis a few months ago. If I recall correctly, there was one show Day 1 in the evening and 2 on Day 2. One was a matinee and one in the evening. Then they take the Cats stage down and do other shows until the last day when the Cats stage is back and they have a matinee on the last day. I tried to find my cruise compasses to get you the exact times but I can't find them.