Imperial Palace Has an
All-In-One rate...
I don't think this is better than the Orleans $25.00/night rate but does add something if you wanted to stay on or come before xbiz.
Also you might want to check out Terrible's (that's where we play bingo, as an FYI). their rates are like 31.00 per night. Easily walkable from the Hard Rock. (at the corner of Paradise & Flamingo)
Or if you want to come with a bunch people and want bigger space:
The Tuscany is all suites and has kitchenettes in it. I think their rates are in the 50-60$ range. It's also just off Paradise @ Flamingo.