I almost booked at the Riviera through Vegas.com. They had a code for an extra 10% off the total (TAKE10) and it works for most hotels on there. Since I’m only staying in Vegas til Friday (and missed out on the EVO code), I managed to book a room at the LVH using another code I had to hunt for and found (ZWSOP). I had to call their number to get the code to work, but they honored it and am getting a $47 a night rate, WITH resort fee included.
That’s another thing to consider when looking at hotels; the resort fee can differ significantly. Cheapovegas.com was a good site I found for deals. Groupon was another. If you have a AAA card that’s 20% your bill at some hotels. Honestly, just Google the name of the hotel you want to stay at with “promo code” or “offer” or the like to find what’s out there.