I remember the iPhone 5S launch it was a total debacle, me and a mate queued for hours at Watford.. we were 4th in line and by 3am we must have been 80th.. scalpers were turning up and we actually got threatened by them!! Decided a phone wasn’t worth dying over and went to MK.. had the same issue there but we all banded together as we were sick of it.
Security just stood there. Was so annoyed it totally ruined the experience and said I’d never do it again.. I emailed Apple about it and received a call, my point was they could simply walk up the line Over night and hand out the reserved cards.... then it doesn’t matter as our phone is all reserved!! So simple and would stop it instantly..
I used to queue at Bath every year and there was never any trouble. Yeah there were scalpers but we never had any trouble with people queue jumping except for one occasion that the manager sorted out really and the security guards kicked them out of the queue