This guided 35-minute trail ride, suitable for first-time riders, takes you along the outskirts of the park. Available weather permitting. Restrictions: Must be at least 7 years old, at least 4 feet tall, and not exceeding a weight limit of 240 lbs.
Added by Upcoming Robot on August 8, 2012

Sunday's sessions are free and open to the public: Session Types (scroll down a bit to Preliminary Conference Schedule)
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I'd like to take one of the tours. I'm still deciding which one.