Content wise, I think it could be done in 2 hrs as opposed to 3.5. However, the biggest issue is the mode of transport - open seating on the back of a truck which with cold morning temps and wind, made it freezing cold. We couldn't wait for it to end. It was early May. An advisory is needed for tourists to wrap warmly. Clear perspex glass needs to be added to the front of the passenger seating to at least protect from the wind.