I had the opportunity to do this tour an evening in June and I really enjoyed it. The views on the Old Denali Highway are fantastic and the guide was entertaining and knowledgable. I found the Jeep super comfortable and awesome to ride in (and now I want one for myself). We saw some wildlife (moose, porcupine, red fox), and Denali peaked out of the clouds (just barely, but still) at one point during the tour.