Do most CGs allow large breed dogs? German Shepherd

I have a Doberman. 95% of the parks allow him . Only a couple have restrictions.
Any dog can be trained to camp. Just because the dog is accustomed to running free does not mean he cannot be taught to walk on a leash.
My dog camps on friends property where he is off leash the entire time and interacts with everyone there.
He can also go to a tight site KOA type environment and stay on leash the entire time. A well trained dog can adapt to the situation and follow commands.