If I buy balcony seats and have to sell, can those tickets be used in the standing room and not used for balcony? In case the buyer is under 21?

I believe so because they don't regulate the standing room

Balcony is reserved seating. The rest is all general admission. So of course they can. You just can't have general admission and try to get into reserved seating.

You can do standing room if you have balcony seat tickets. Standing room is general admission which is not regulated.

You can go anywhere if you have balcony tickets.

There is a balcony. It is monitored. The standing room area is not. If your ticket is for balcony space, you are free to go anywhere.

100% yes

I'm not sure. Call the box office and ask

Yes I believe so

Marquee theater is only standing room there is no balcony