If i buy balcony do i have to be on balcony or can i go down to GA?

No, you can be on the GA floor, and then go to your seat through out the night. Thanks! We will see you tonight.

When i went there there wasbplenty of room for more peole in GA. I dont think they would care

I'm not sure, I didn't have balcony tickets when I went but it seemed like GA is open access. But don't take my word on this.