My vote is eastern Mass. I'm not from that area, so I can't recommend any good fields though. That's not to say that if the NE AO Day ends up in NH, I won't be there (I've traveled up to NH for a single day of paintball). I think Cape Cod sounds good, but it'd just be difficult for a lot of people, as it's out of the way.
There are three kinds of people in the world: Those who can count, and those who can't.
With understanding comes understanding.
If the saying is true that we are what we eat, aren't we all just cannibals?