To sum it up the whole queue ended up screaming at a man as he took the 'standing' sign off the door half an hour before the concert was meant to start. After waiting 8 1/2 hrs I was very angry. But anyway we got our way.
Basically I sent an email about this to the NIA. Finally after nearly a month I've got a reply:
Thank you for your email regarding your recent visit to The NIA to see Pink in concert. I was delighted to read your positive comments on the concert, however, I am sorry that you were disappointed with your experience as you describe. In light of the issues you have raised, I have been liaising with the relevant departmental managers on your behalf.
Firstly, regarding the queues that you have made reference to, I am sorry that you felt that there was no real organisation to the queues. To explain, a procedure was put in place for queues and there was signage on all the doors to advise visitors that there was a standing queue at each door. Regrettably, on the night of your visit, we had an issue with a member of staff who took it upon themselves to alter the entry process, and this was not brought to our attention until the doors had opened. This caused problems and the confusion that you describe. The member of staff has been dealt with and the necessary steps have been taken in dealing with the staff member in accordance with our standard procedures. Having passed your comments on to our Security Manager regarding the manner of the steward who you encountered, please be assured that he will rebrief our stewards on treating all visitors with sensitivity. All our Stewards attend a customer care course as part of their induction and they will be reminded of this. Please accept my apologies for the confusion and stress that was caused in the handling of this situation, and for the way it affected your experience. Please be assured that The NIA holds many standing events without issues, and this was not indicative of our usual procedures.
Thank you once again for contacting us and we look forward to welcoming you back to The NIA in the future.
Just glad I know what happened and thought I'd share it as I know there was looots of angry fans there.