We had a great introduction to a side-by-side drive of Hell's Revenge. The guide was personable, knowledgeable, and gave us confidence to fully experience the ride. We drove our brand new Kawasaki Teryx KRX which was very capable and easy to drive. We had great overlooks of the sunset, Colorado River, and Hell's Revenge classics like Mickey's Hot Tub (which we don't drive through).
As a note, we did the sunset tour, which is a great option. It makes for an exciting finish to the day and let's you take pictures at the "Golden Hour."
The other advice is to mind your personal items. Phones, water bottles, sunglasses, etc will be flying and bouncing around the vehicle.