Re: Viva Las Vegas !!
You'll love the Luxor. That's where we stay whenever we go out there (at least twice a year). Nice rooms and a good atmosphere. Great staff. I love the casino, and the pool's really decent too. Now that they have Starbuck's Coffee at the hotel, it's absolutely perfect! The buffet (Pharoah's Pheast) is AWESOME for breakfast or dinner. You usually get coupons for the buffet at check in (buy one get one free type deal).
If you like vintage guitars, check out Cowtown guitars. It's not a huge shop, but it's PACKED with nice gear. And it's right next to Sam Ash (IIRC). Red Rock Guitars is another small shop a bit off the Strip. He had some nice Ibanez gutars in there, but the prices were a little on the high side...
There's always plenty of live entertainment. Check out the House of Blues schedule, especially since you're staying right next door!
Other highlights from our last trip were the Shark Reef at Mandalay Bay (if you like aquarium type exhibits, it's very cool), the Blue Man Group show (awesome, especially for musicians), the Freemont Street Experience, Bellagio fountains, Sirens of TI (get there early...), and so on. If you like the adult review type shows, Fantasy at Luxor is really good without being particularly "dirty" (not that there's anything wrong with that, of course).