Renting in Vegas from Alamo - won't risk voiding agreement w/ off-road travel even if the car was capable (which I sure a Cherokee will be). Will be in Springdale/Zion for 3+ days, 2 days in Tropic/Bryce (one day in Bryce, and will explore Lower Calf Creek Falls and/or Burr Train the other), 3 days in Moab/Arches/Canyonlands (might try your off-road rental one of those days in Canyonlands if time and $$ permits), then one day in St George then back to Vegas. I wouldn't hesitate taking MY own car off the pavement, but don't want to chance any extra fees w/ a rental. FYI - Thanks for the Lower Calf Creek Falls recommendation - will definitely make that happen, (and add part of Burr Trail if time allows.)