I just returned from Vegas. I was able to snag at the "very last minute" a Hilton promotion, included in the pkg, two free cocktails, two free spa visits (which I thoroughly enjoyed), buy one buffet, get one free (the buffet was very good by the way ), 20% discount off the puchase of tickets to a musical at the hotel ( sorry I forgot the name) and one free welcome gift (which turned out to be a Hilton deck of cards). All in alll not a bad deal for $69.
Insider tip- always check out the hotel's website specials, even if you're right outside in the parking lot on your laptop.
Almost forgot, I also got Hilton points for the stay, like I said, all-in-all not a bad deal. (If you want to know what happened in Vegas read my blog. How's that for promotion Chris?

Edited because "throughly" was not exactly what I meant.