I was last in vegas 2 years ago, there is a specialist beer bar near the university that boasts hundreds of bottled beers but I never made it out there, no buy in from the people I was with.
They have Sierra Nevada on tap in alot of bars over there and there is a Sin City brewing company as well but I didn't try any of their wares.
On a non beer side to vegas, you can really do anything, I'd say get a show in, I didn't think I'd enjoy it but it was pretty good! The shark tank has no great white (I was disappointed, Vegas not having the biggest was a let down)
The gambling is great fun, I spend 4-5 hours every night playing blackjack and drinking for free, lost $60 overall so I gained on the banter and free drinks.
I'd love to be heading back over there, great for winding down, best of luck finding some local brews and I'll take advantage of your research next time I go!