Generally it is okay to use a church for performances, if certain norms are followed. Obviously it should be moral, and not anti-Catholic, anti-God, etc. Admission is not supposed to be charged, if I recall (free will donations are okay). If anything secular is being done, Jesus is not supposed to be present in the Tabernacle, so the consecrated Hosts need to be removed to another place of repose like an Adoration chapel or the rectory or school chapel. And you are allowed to do some stuff before or after Mass that would be forbidden during Mass. Stuff like that.
I think the USCCB website or the Vatican website has the rules on performances.
There is a very important division at all times between the altar area that would be the actual sanctuary, and the nave or other areas of the church. Basically, nobody has any business doing non-church, non-sacred things in the sanctuary or sacristy.
But the nave is relatively fair game, the vestibule and outer areas have very few restrictions, and the areas outside church but in church grounds have even fewer restrictions. But there are always some, because church grounds are sacred ground.
Ideally the choir would maintain more decorum in front of the altar, even though they are in the nave. But dancing per se is not forbidden, and there are things like the sword dance performed by young boys in Seville (I think?), which is done in the nave right outside the sanctuary. And that has been going on for five hundred years or so, specifically for Jesus to enjoy.
Shrug. There is a lot we can do, but it takes prudence and taste to decide whether it should be done, and how one should do it.
