Peter was a fantastic guide who helped us explore some great sights, gave us tips for wildlife photography, and answered every question we had about wildlife and conservation efforts within the park. He even went above-and-beyond by tracking down a lost item and making sure it was returned to our hotel.
Our tour lasted about eight hours, including a stop for lunch. We had time to go back to a few sights twice looking for animals. While it was a relatively slow day in the park for wildlife, we did manage to see 5-6 moose (including some great close-up sightings), some bison, and pronghorn. Our group included both younger and older people and I think the tour hit a nice balance for everyone.