The guide was awesome, older guy who knew lots about history, geography, geology. Our tour was in a 4x4 that sat 4 guests and a driver. A little tight in the backseat but still enjoyable. We went places in the park that we would have never seen, even if we rented a jeep. Tour was off the beaten path but on dirt/Rick roads and was like a custom private tour. Tour bypassed the line waiting to get into the park, which was awesome. They provide snacks and water. Far better than other tours where there are crowds and lines!