Just a few suggestions:
Promote it as a family get together - spouses, gf/bf, kids, pets on leash and encourage everybody to bring friends and neighbors. Maybe a modest cook-out?
While it might seem counter to OC philosophy, even suggest that OC or CC or even not carrying is fine. OC if they want, but it is not mandatory.
What you want are people who are interested in meeting other normal, law abiding individuals that have an interest in RKBA properly and legally. Softly enough to attract as many as possible - then the friendly atmosphere will educate them......along with some living breathing examples.
Your numbers on OCDO are small - so don't be disappointed if the response/turnout is not particularly large. You gotta start somewhere.
When you get the date, time and place set; start a new thread and ask for a sticky. That'll keep it on top of the Maine sub-forum,
Good luck and have fun!
**These are Grapeshots suggestions and I think that they are great!! Soooooo we can run with this! I thought that these were a given, but maybe I should have portrayed them better. We want your dogs, your kids, your grandmother!! Make it an event with the family!! The only thing about the food is i'm not sure if we need a permit for that or not??? Anybody know? If we need a permit, I can get that but what would I call it? Obviously I couldn't say that it was an OC event, that would create way too much attention?