Don't go to the Casino's. That's a school boy error. If you plan on wasting money, just go to be bars that have scantily clad women writhing around metal poles.
This is incorrect advice.
We spent a month there, the bst thing we did was casinos. Play the low stake tables, tip the waitress $10 on the first round, watch her come running back to you every 15mins hoping for another generous tip, don't tip again until your last drink
Go to Hakkasan once to enjoy a a top DJ. It's expensive but it's very nice inside. Go to the Welcome To Las Vegas Sign and get a group photo. Go to Spearmint Rhinos - this was THE best strip joint, with actually hundreds of girls in underwear. It was essentially a nightclub full of semi naked women - pay for a dance and touching was encouraged!

DO NOT go to Treasures! That place was trashy and was esentially a whore house where the girls picked out the most drunken guys and walked them up to the ATM, asked them their pin, then withdrew your cash for you - scary.
Other than that, walk the strip - there are some amazing sights to behold - not just the buildings, you'll definitely bump into some amazing and interesting characters.
EDIT: I highly recommend the show Absinthe at Caesars. It is crass, abusive, offensive and very rude. Parts of the performance actually left me breathless though. Just my thing
