Get a load of this:
"Lineup will be outside front entrance. Each customer may purchase up to three books maximum. No posed photography, photos at the table or personalization. Promotional material or memorabilia will not be signed."
Update on 10/29:
So go figure! I went to this event and the line was not very long and the crowd was manageable.
The table was waiting for the author to begin his book signings.
And then... the author arrived and sat down. I was able to take a few photos from a distance, but then equipment obscured the view. So, I went home.