There is the main stage with the extensions, then there is the catwalk to the middle of the floor, then there is a hidden stage that pops up where the "sound stage/music stuff" is at the opposite end of the arena (ex: say you are at one end of the football field and the stage is at the opposite end), and then she randomly pops up again in a different area in a lower level section where people have seats (not on a stage, she sings from the seats you sit in!) . Then she makes her way back to the catwalk THROUGH the crowd (slow & shaking everyone's hands on her way).
Also, the floor stage is REALLY low, so if you have 1-6 row floor seats and run up to the stage you can touch her (she leans down all the time).
I don't know what venue seating chart this is but I drew an example diagram here:
The green areas are places where she sang. The black line I drew (connecting section 4 to the floor, then again to the middle floor where the catwalk is) is where she went through the crowd to get from stage to stage (shaking hands, taking her time, not secret at all)
Hope it helps you guys.

