Have visited a multitude of casinos (both Indian and commercial) throughout my life, and have to say I was genuinely impressed with this one. We stayed recently while in town attending an off-site concert and at times we felt like we were back in Vegas.
-Great assortment of slots
-Top-notch comfortable poker room (in the non-smoking section of the casino)
-Affordable food options
-Incredible hotel rooms (we stayed in a newer tower, suites tower maybe?)
-Large collection of music history memorabilia throughout the casino (all tagged with Hard Rock Vegas inventory tags, so it's truly interesting stuff.)
Overall great time at the Hard Rock Tulsa. The Tulsa/Catoosa area itself is somewhat drab and boring, but you'd never know it from the inside of Hard Rock.