I would change hotels. My buddy stayed at circus circus last month. He said it was disgusting, roaches and all. There are other options for onlly a few dollars more. Not worth ruining your vacation just to save a few bucks.
On a lighter note... I think Russel Peters has a stint in Vegas. It's legal to drink publicly. If you're into CSI (show) they have an interesting exhibit there (last year anyways you'll have to confirm that). Last time i went they had two cirque shows. one of them was blah and the other very good (sorry i don't remember wich was wich).