The Backlot Dance Party at Disney California Adventure consisted of a DJ on the Backlot Stage. The benches were all moved out of the area. When I walked through it was very quiet with only a couple people dancing. The nearby bar was also empty with more cast members than guests in the area. The food truck had some guests eating near by and Monsters Inc had a 10 to 15 min wait so there were some guests in the immediate area.
The dance floor at 7:45pm