For those who've met some cool people at defcon, any tips?

This will be my first defconded people there, but otherwise I don't know what to expect., and I know a few people in the Vegas area, but none who are attending the convention. I'm competing in the DefconBots competition, so I know I'll meet some like-min

So anyway, if you go to the DefconBots competition, and see the guy with sponsor stickers plastered on himself, and whose robot plays the theme to 'the good the bad the ugly', give him a friendly Hello.