I was fortunate enough to get the okay to go to WWDC 2013 this year. Unfortunately, it looks like I wont be going. It has been a recent trend that each year, apples WWDC sell out quicker and quicker. From my personal experience today, it would sold out in 30 seconds. Looks like now I'll be on the look out for resell tickets, which from my understanding apple only attaches the sale to the account.