Woo, looks like if all goes well I'll be at FR August 6th, possibly 5th too (not sure if my noob ass is ready for a night op as my first real game :P).
As for field stuff, from what I gather whether it's a public or private field you pretty much need insurance to play there legally. Is there anything else (you mentioned permits Greylocks) that one requires? I'm just looking to get an idea of what it costs to have your own place to play, whenever you like with no costs attached and without the risk of horrible legal issues. As far as I can understand here I basically have to go to an insured field to even fire an airsoft gun outside.