I'll second the suggestions to spend some quality time in Utah. Definitely make time for Hoover Dam - it's worth a half-day sojourn from Vegas. There is lots of good beer in Colorado (but NOT in Utah!) - be sure to stay hydrated.
I like the Colorado Springs area quite a bit; a couple decent brewpubs, Air Force Academy, US Olympic Training facility, Garden of the Gods, and Pike's Peak. Worth a day, IMO. I double-dog dare you to stay at
The Broadmoor. 
I enjoyed the Coors Field tour in downtown Denver (it was not in-season when I was there); it is a very cool ballpark.
