Haven't been to a concert on this tour yet, but from what I can see online when following it is that the check-in on show day has been early like 6 /7 am and you MUST turn up and stay all day.
This means no-one is actually rocking up later and pushing in ahead of those who turn up later as they should already be there.
Unfortunately it doesn't help those that work etc who are unable to checkin in 2 days earlier for a short time.
The GA line for Philly was started whilst the latest concert was still going. I don't like that. If you had plans to fly to Philly and turn up at GA