Or if their credit card expires between now and the show 6 months from now. Or if it's stolen and renumbered. Or if they end up sick and want to get their ticket to their mother. Or if one of their group has to go to the show late because of work.
And in the end, none of it will make a damn bit of difference since they won't be selling any of the good seats to the general public anyway. Those will be held back and released closer to the show as normal tickets, which the scalpers will snag as soon as they hit the open market. Scalpers are only interested in two kinds of tickets. Good seats that will fetch a premium, and any seat in an event that'll be a fast sell out. The onsale and presale dates won't have either.
I'd like to believe that they're going to step it up for the fans, but it's not going to happen. Like I said in a different thread, if they don't understand what the problem is, they can't do anything to rectify it.