At one of the gyms I work, they implemented a ticket system about a month ago. Members have to sign in on a clipboard, check off whether they’re a pass-holder (2 levels) or a drop-in, and they also have to sign in at the front desk to get a ticket (room capacity reasons). I’m supposed to take the tickets while people are signing in, and make sure the # of sign-ins matches the # of tickets.
My class is a small yoga class in a little yoga room. I only have to manage 10 to 15 sign-ins. It’s a pain in the butt. However, we do it because our class funding depends on attendance. I can only imagine how much of a pain it is in the large studio where the big weekend classes are held.