Anyone can get involved with GCC. Last year, when the "oh no, the c/ground may close! GCC DO SOMETHING!!!" issue came up, people with the GCC extended email invitations to several(if not all) who commented - "Attend out next meeting!"
Selective invitations to meetings aren't exactly a good way to build a healthy organization, one able to embrace and digest dissent.
The Preserve does the same thing. They selectively invite neighbors and Life Endowment members under the guise that "the meetings are for those who support the mission of the Preserve". The truth is those of us who are dissenters do support the mission of the Preserve, just not the tactics. They don't want any criticism of their tactics.
The GCC seemingly follows suit. They privately invite select people to private meetings like the one Terrie speaks of. Their steering committee meetings are announced but it's "please rsvp" in order to find out about the location.