I got tickets in the upper bowl seating if I enter the stadium right when it opens will the staff let me go down to the lower seating bowl to let me try and get some autographs?

In the Oakland Coliseum, yes. In the Arena, I believe so. They're pretty cool. Good luck.☺

They kicked a guy for being down at the end of the aisle.

If you go early enough the staff doesnt seem to care too much. After halftime i snuch down to the first tier. No one checks your tickets. U can easily sneak to better seats