I know the area and we played there a few times while the RCMP were notified beforehand. The most dangerous part about that field is that you can get lost very easily (we lost a young kid there for a good 30 minutes even while radios were a must). It's HUGE and I don't think we (as a sanctioned airsoft group) would play there for awhile. The only people we ran into were some guys 4x4'ing and paintballers. I've seen some guys playing in the forest behind golf courses before... there's not a lot you can do about it but make sure YOU play safe.
"Any punk can shoot from across the room but it takes a real man to get close enough to stab"
"Why cause a huge disturbance when you just wanna kill ONE guy?" - Chris Rock