Just finished my first day (had to miss the first two to work)--as a matter of fact, they have internet kiosks in the hall, from which I am typing just this moment. The show is quite a bit larger than I would have imagined... just about everything you could ever want. The only problem is that walking around makes you wish you had quite a bit more money.
Met AmbushMaster and Mr. Harsey, as well as Air.177. Mr. Harsey's just as big as you think he'd be, and has hands that could probably crush your skull; AM made me jump when I tapped him on the shoulder and he turned, looking like he was about to blast a couple into me. And Air... well, I didn't see any evidence of a Sock Monkey, but it could have just been hidden somewhere.
The other part I love about Vegas? Good cheap restaurants.