Actually, I take part of what I said back. The first image, you can click on it and open it on another window, then click on it and you get a huge pannable image. The crowd fills in the area of the white tent in the back, where the screening was, and there is only empty areas around the vendors...
Therefore it was likely 95% + filled, and you can see there are overflow people outside the venue in the lines to the screening area, and to the upper right, that stayed to see or hear what they could.
opps - clarification
The crowd in the flag picture fills in the area of the white tent in the back, where the screening was, and there is only empty areas around the vendors to the upper left...