My wife and kids went.
I didn't go, and would have been turned away if I had. They confiscated my wife's Leatherman micro off her keyring.
Imagine if they'd have found a pocket knife and a pistol or two?
I haven't had time yet, but I intend to check on the legality of the metal detectors and "checkpoints." The parks are public places, and I don't recall an statute giving anyone authority to setup random searches and to confiscate legal personal property or deny access.
P.S. Sorry I've been MIA lately... crazy busy at work and home.