A 17 year old scholarship winner for WWDC 2015 goes over his experience.
What struck me was the fact that people actually camp out for good seats at the WWDC keynote talk:
some people started lining up for the keynote at 5 p.m. Lining up at 10 p.m. will get you in the first 20 people though. If you want to have a good seat, it is a good idea to start lining up before 3-4 a.m. It would be cold at night, so remember to bring layers of clothes, a blanket, a chair or anything to keep you warm. While waiting, you would see companies hand out free stuff. I got some hand warmers and pizza. At around 7 a.m., you start going in Moscone. It gets really packed, and everyone is pushing up against you. At this point, there will be people cheating and climbing over the rails to get on the other side near the door. Once through the door, you go up some escalators. They tell you not to run, but everyone does. Once up the first escalator, be sure to stay on the right side. The right side goes up the right escalators, which leads to the right side of Presidio. The best seats are at the front, to the right. The middle space at the front is reserved for the press and people who work for Apple. After you get up the first escalators, you will have to wait near the second escalators for around two hours. You can get some food and take some rest. After an hour of waiting at Presidio (and after you get seats), the keynote starts. Don’t leave your seat while waiting because someone may take it.