For those with General Admission tickets: take a good look at the GA procedures published by the Greensboro Coliseum, as they might be useful even if you’re not attending this particular show.
From 1:00 p.m. until 4:00 p.m., sequentially numbered wristbands will be distributed to patrons in possession of a valid GA ticket (patrons are asked not to attempt to line up prior to 1:00 p.m.). There will be a limit of one wristband per patron in possession of a valid GA ticket.
Patrons who have received a wristband may leave the premises. They must return by 4:30 p.m. A starting number will be randomly drawn at 4:30 p.m. and announced at that time. The patron wearing the wristband that matches the starting number will become first in line (i.e. if wristbands No. 1-100 were issued, and No. 27 was drawn, the line would start with 27, then 28, 29, 30 through 100, then from No. 1 to 26).
See complete info here: Greensboro GA procedures