3 days of awesome gaming and nerdery at a swanky hotel in Stamford. The con has tons of boardgaming & RPGs and this will be it's 25th year! You can check out the wonderfully retro website here: http://conncon.com/
It does require a paid badge for entry, but if you act fast you might be able to volunteer to run events to get in free of charge.
If nothing else, you don't want to miss the Pretty Pretty Princess tournament!