Rent if someone in your group has off-road experience and you want to pick your own trails. The rental shop gives you a map and a safety talk.
Drive behind a guide if you want to drive yourself but don't know the trails. On these tours you drive your own UTV and follow the guide's lead over the hard parts.
Ride along if you'd rather sit back. A guide drives a UTV, Jeep or open-air Hummer, and you get the views and the thrills without the driving.
Off-road driving isn't allowed inside Arches or on Canyonlands' paved roads. Every trip here runs on the land around them.
Most Moab trails, including Hell's Revenge and Fins N Things, are in the Sand Flats Recreation Area, which charges a small day-use fee per vehicle. Many tours include it. If you rent, check whether your rental does.