I went last year (for free!) and it was awesome...and I can walk to Seattle Center from my apartment. I even had the "bonus" of the sweet, sweet sounds of the Wu-Tang clan blaring into my apartment window at 11 PM at night.
I wonder if he'd headline? I saw him a few years back at all tomorrows parties and he kinda went second fiddle iirc to the boredoms. He also tries to keep such a low profile, esp. when it comes to performing.