In today's online world of e-commerce, slammed servers are the equivalent to waiting on line.
A buddy of mine that I've known since middle school is a lifelong Doctor Who fan. Yesterday, he called me and asked if I could order him some tickets for a Doctor Who movie showing later this month in New York City. I said that it wouldn't be a problem.
Instead of setting a time for the tickets to go on sale the announcement was made via Twitter. The link in the tweet lead to a bit.ly link which redirected to clearviewcinemas.com. But that website was struggling under the load. Once it did load (if it did), there was a description of the event with a link to purchase the movie tickets on movietickets.com. All the traffic flooding into movietickets.com brought down their entire website.
Even with all the benefits of the online world, queuing up and waiting on line at the theater would have been your best bet - we've only decentralized the problem. But, at 11¢ per ticket, how could you go wrong and not at least give it a try.