Hand of Evil said:
Say hello, make freinds, have fun.
See the Art Show.
Spend time in the Auction.
See the Costume Show.
Seminars are good for down time.
Anmie Movie rooms are good for down time.
Ask to take someone picture before taking it.
Don't talk about how cool your hyper-super-mega character is to game designers as if they were real life. That's just creepy.
That last bit reminds me....
As people who attended last year probably remember, Wayne Reynolds (WAR, the D&D artist that most people attribute 3e's "dungeonpunk" visual style to) had a little booth in the WotC area where he was signing stuff that he'd drawn and painted (I got my Monster Manual signed) as well as selling some original art. We were the only ones over there and we were thinking of buying a piece or two (I like his stuff!) when out of the crowd comes what I'd guess to be a high-school aged kid with backpack in tow. I'm talking to Wayne (who is a marvelously nice person) and so the kid starts chatting with my wife (she's a girl, she's at gen con - even without my being busy, I suspect he would have tried to talk to her first). But anyway, he asks what brings us to the con, and then proceeds to ask what games we play. Since we were mostly playing D&D at the time, my wife tells him a little bit about our game, but tries to avoid a lot of detail - she's here to talk to Wayne. But it's unavoidable. He starts pressing for details, asking questions about the homebrew world we gamed in, and then starts talking about *his* characters and *his* homebrew world, alternating his attentions between me, my wife, and Wayne Reynolds. The speed increases as he starts discussing the minutiae of his Fighter's history, and I reduce my participation to "yeah, uh huh, yep, cool" while I slowly nod and try to pick out a piece of art to buy from Wayne. But he won't shut up. He keeps going, and going, and going...eventually (while he was concentrating on Wayne, telling *him* about his characters) we just snuck away.
We passed by a few more times over the next hour or so to see if the Kid had vacated the premises, but every time we checked he was *still there.*
To this day I feel bad for abandoning Wayne Reynolds - and because of that weirdo we never got to go back and buy some art. I hope Wayne is back this year.