We are only occasional viewers of the show at my house, but I have never quite been able to figure out if the moms are in an area where they can actually see rehearsals and regular practices. When my girls danced, there was one studio with one-way glass so the parents could see in but the kids couldn't see out. At the other two, parents were not allowed anywhere near the actual room. The instructors said that parents being in view of the dancers was distracting (which I agreed with). When they were little, there was a "parent viewing day" when we were allowed in for a few minutes to see what the kids were learning, otherwise we didn't see them dance except for recitals and competitions. Now I have no idea what the norm is elsewhere, but these studios were in three different Canadian provinces so I assumed this is the usual experience.
(Honestly, for me watching practice is like watching paint dry. My girls are in different activities now - one is a figure skater and one is a soccer player - and while I am happy and proud to go to competitions and games, watching them practice is extremely boring. Besides, it's their activity, not mine. I support their choices completely, emotionally and financially but I don't need to hover constantly.)
I noticed the "Cheer Perfection" moms actually sit in the gymnasium. Yikes.