Seth,

The "tours" have been seasonal. The Preserve had a limit of ten people per day with an escort. There's private land all about the area and the Preserve wants to keep it low key so as not to ruffle any feathers.
The eventbrite site was to register for the "tour" so the body count could be kept to ten.
It appears the Preserve will forego the escort this season, but will keep the registration requirement intact.
There are some rope climbs there, somewhat comparable to Dickie Barre. Lotsa pebble wrestlin though.