Hi Liz, I did this tour last May and can only agree with the others who have replied to you in saying that it was absolutely brilliant!. The scenery is awesome, so many highlights too many to mention here but the Grand Canyon is beyond all words. Do the helicopter flight over the Grand Canyon if possible and the 4 wheel drive tour of Monument Valley. As other people have said, the tour is full-on but there is everything from the history of the wild west (Fort Laramie, Deadwood, Little Big Horn battlefield) to the fabulous scenery and the bright lights of Vegas to see and enjoy. Trust me, you'll have a great time! Mike