It's better to reserve classes in advance at least a day or two since they can fill quickly.
Proof of vaccination is required to attend classes.
The later classes are recommended because the classes right at the end of the work day get packed.
I have been using it now for 3 months and it saves me so much research. Reduces the need to call and double check every time.
How did I not know these places existed?! Atly's scoring is a lifesaver, now I can finally find THE spot without wasting time Googling my life away.