content: the upper deck of the BOK was about 25-30% filled. when POTUS came on. most of the upper sections behind the stage were filled, but if you stood behind the stage at mid-level on stage right, it looked deserted on the upper level. it definitely wasn't filled to capacity, but many didn't show up for fear of not getting a seat.    i was there, and was thinking about not going in b/c of the line.  they let ppl in in groups of ~75-100, and the line was long for quite a while after 3:00.  i was going to wait until they opened up an overflow area.  then i heard from my sister inside that there were still seats avail so i jumped in line. got in by 4:30 or so.  not sure of the timing, but 'protesters' blocked up the security entrances for a bit, and many were turned away for a bit near or at the beginning of the rally.  floor access was cut off before the VP took the stage, so from then on, noone could join the floor crowd.