As early as you want to, but there's not a bad spot in the place so you don't have to go early unless you want to be right up on the stage.
It should be as early as you want. We got there 2 hours before the doors opened for the Foo Fighters and there was already a huge line. It's a great venue! Enjoy the show!
Well I just got at the venue at 3am. I'm pretty stoked for this show. Well some venue official just turned me away saying people are not allowed to line up till 10am. Meh
Thanks! Your answer is awaiting moderation.