Guided for 1 of the 2 days. Went through a newer company called Bike Blast. Pick up/drop off from the strip, they provide everything from camelbaks to bikes. The guide was a DH racer formerly signed by Giant (regional team, not factory team). So very happy with the experience. I am much, much more scared of the big f'ing spiders native to that region than bears... so having someone who knows the fauna/flora/trails was fantastic.
Edit: Climbing around that area is definitely more tech than here. Found a YT of a fun, flow track I did (but the guy took all the chicken lines and his camera doesn't pick up the details of the terrain...):
https://www.youtube.com/watch?v=qEq9AexLo9k . It's a very nice variant on the usual Vegas experience. I'll do this again at my next conference.