Been there twice. Stayed at Circus Circus the first time and Bellagio the next. IT ROCKS. Best place in the world for someone like me lol.
We took a bunch of cash and some empty suitcases and bought a new wardrobe. As Hockney said it pretty much works out the same in dollars as you'd pay in pounds here. You'll love it.
Oh and as said, do the Canyon. Breathtaking. And if you have the balls do the Skywalk*
*I don't have balls!!!