You could probably shoot all 100 in one day, but the crowd is what takes so long. ALot of bottlenecks. I suggest pre-registering through the internet and showing up around daylight if you want to shoot all 100 in one day. It took us around 3+ hours to shoot 50 and we really didn't get bottlenecked until around #32. Some of the guys that shot on Saturday said they sat in the same spot for over an hour on the American side.