I can fall asleep pretty much anywhere, any time.
I spent a few summers touring with Colts Drum and Bugle Corps. If you can sleep in a cramped bus seat, or a gym floor, you can sleep anywhere.
I tried out for the Colts one year when I was a junior in HS. I didn't get accepted, but I don't think I would have gone anyway after talking to some people who did it for this exact reason. I CANNOT sleep on a bus/plane/car.
Also, I was the sports guy who was in the band, and everyone there was 1000% into music. They thought I was insane that I would play football, take off my pads and play at halftime, then go back to football. All the trumpet guys told me that they skip home football games and sit with the band.