In the ‘not full’ picture, everyone is looking in the same direction. They aren’t acting like an audience with three hours to kill although they are acting like they were paid to be there.
And, I hope that Rapid Response Romney sends out a photo of himself and Mrs. Romney in a similar pose, you know, for contrast.
Not only that, even though it's kind of hard to tell from the photo, it looks like everybody in the seating areas are standing. Why would everybody be standing 3 hours before Obama was scheduled to appear on stage?