I'd recommend getting there 45 mins before the class, reason being is because it is first come, first serve. You're able to sign up for a class as early as 30 mins before, so if the class is at 6:30, the button for sign up will be available at 6pm. Usually for the zumba classes, they fill up quickly.
Why don't you try calling Chuze directly??? Is that to difficult an idea????
It depends on what class you want to attend because I think they each have different class sizes and some are more popular than others. I have seen lines form for the classes five to ten minutes before they start for some classes.
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