Disney has announced an “Avatar Day” style event called Tron Night 2010 on October 28th in select IMAX theaters. You’ll be able to snag free tickets to the event starting tomorrow at 1:00pm Eastern time via this site. The event will feature a 20-minute preview of the movie, just like Avatar Day. And just like Avatar Day, the tickets will likely sell out to scummy eBay scalpers within fifteen seconds of the link going live on the site. So if you want to try for the event, good luck.