The Old Mill is a 51% establishment, that's it as said above. It's not posted 30.06.
And there's no reason to get too obvious or sneaky or need a secret handshake or hand signal to an LEO.
You go through the gate. If they wand and your handgun alerts, they'll either ask you about it or not. I was asked if I have a phone or something and I just said no, it's a handgun. That was it, went on in and fought the ridiculous crowds of people pushing and shoving and rolling over your feet with strollers. 
The State fair is the STATE fair. It's post restricted because it can't, and the State Fair doens't have a problem wiht it and it's never been an issue that I'm aware of. A couple news channels covered it a few years ago, and it was pretty much fluffs and yawns to fill air time. There was no public uprising or riot.
