After what happened this year with AT&T pre orders, I wouldn't be surprised if not a single person pre orders with them again. Next year on pre order day when the site goes live and no one is ordering, they will be wondering if their site is even working.
I sometimes wonder if they intentionally make online pre ordering difficult. I think they want everyone to line up outside the stores on launch day because it's good publicity. Look at all the free advertising they get from the media covering how long the lines are.