I'm off facebook too, so its challenging keeping up with planned events. I also don't know if there is any one particular person who organizes them... We need to exploit these calendar events and get them on the Events board.
My understanding is that they host games on the First Saturday Sunday of each month starting in April, they use regular paintball refs and turn out is typically weak unless there is an OP or Scenario game or something.
I talked to the field manager last summer when I was out there for a paintball outing; the consensus was that its an occasionally a potluck of enthusiasts, young kids and experienced players. I went out there once for a Saturday a year ago, and no one showed up. Its hit or miss I guess. There was a game in December that I missed, apparently it had good turn out.
Are you interested in planning an OP? I would love to contribute. Hells Survivors is great for scaled gameplay. Masters course is absolutely treacherous, an incredibly fun challenge.