The check in at the Giant Center was awkward for a lot of guests. We were greeted by security that held up a very small rectangular card to measure the size of women's handbags and refused admittance to anyone whose bag was even a little bigger than their requirement. This forced many guests to walk back to their cars and leave the handbag. While you mention this on your printed ticket, it is easy to overlook and should be predominate on your printout. There were many unhappy guests. This requirement by the venue was unreasonable.
Also, I printed out what I thought was a two day ticket and it was denied when I arrived at the second day. The staff was very helpful and printed out the second day ticket for me, but it involved going to the box office, waiting in line there, and getting back in a long entrance line. This could also be highlighted better on your printed ticket.
The concerts were wonderful - the Giant Center is a poor venue for such a concert.