Can you do the group exercises at 24 hour Fitness without being a member?

I really want to take a few of their classes but I don't know if I have to be a member or not. So, my question is, can you do the group exercises at 24 hour Fitness without being a member? ThanksCan you do the group exercises at 24 hour Fitness without being a member?Yes, if you have a guest pass. :)