This was an amazing trip! We did a private full-day tour. It allowed us to see all we wanted to see in the day. We even asked the tour guide Brian, who was great, to extend it so we could see Old Faithful and Grand Prismatic and he allowed us to do that. We were fortunate enough to see wolves eating a Bison carcass, a grizzly, and her cubs, a black bear cub, elk, and bison. Brian knew the areas to go to and Adam who owns the company would communicate where sightings were last. It allowed us to go directly to them. The van was comfortable and had lots to eat and drink.