Can I just say, this was my first time going to an event at Diesel on a Sunday night, and it was so organized, I was so surprised and proud. Doors opened from 8pm to 2am. They have separate entrances for 21 and up - entering via Sky bar and 20 and under going through the main entrance. The 21+ patrons could access the first floor but the 20 and under patrons could not access the second floor. They completely blocked off the bar from the underaged kids, on top of giving the 21+ patrons wristbands, which was very thorough. Down on the first floor, the place was lit but not too crowded that you couldn't move, the crowd was great, and it was an awesome night.