The box office hold all this information. On Friday, the last person to get tickets in the park was on line at 8:05, the last person at the public 8:30. For more specific information, call the public or delacorte box offices.
I was there today, the staff at the public said a couple of people got there at 10:00 pm last night, a few at 3:00am, and the rest came at 5:00 am and on. It was too long, too much extraneous stuff. some of the songs were too long. only one of the characters, i couldn't tell which one he was because in the program they're all listed as "soldier" "lieutenant" "general", and i can't tell the difference. but one of the generals or lieutenants or something (the one that went to complain, if anyone knows) was amazing- he was the only one that actually captured my attention. sorry, ah i'll stop.