There are lots of places that will rent Jeeps for the day in Moab. The problem is, their day begins at 8:00, and end by 6:00. This doesn’t correspond with the photographer’s day.
We approaced a number of places about doing an over night rental, but places like Farbee’s were not interested unless you were willing to pay for two days, even though they had a yard full of un-rented jeeps. They would do two half day rentals, but that costs about as much as two days.
There was one exception, the Moab Tour Company. In fact, the Moab Tour Company does all their day rentals for 24 hours. They say it works better for them as it spreads the pick up / drop off work load, and it definitely works better for photographers who want to be out at sunset and sunrise!