My husband and I went there for the first time tonight. First, trying to park at Harrah's proved to be an ordeal. It was hard to find self parking - we ended up parking at the Flamingo's and walked 2 blocks to get to KGB.
Finally, after getting there, my husband ordered the angus burger and I built my own turkey burger with mushrooms, garden mix and pepper jack cheese. We also got the onion rings and a chocolate/vanilla shake. The portions were huge, but I have to say it wasn't anything to rave about. The turkey burger wasn't tasty and my husband's wasn't all that great either. The chocolate/vanilla shake had a strange taste - it didn't taste like a shake at all.
For now, we won't be going back.