Just not very good. First off it's the only buffet in Vegas where I had to walk through a quarter mile long hallway through meeting and convention spaces to get to. Not sure why they wouldn't put this off the casino so people would actually know it's there and could find it easily.
The food was mediocre. It was all well seasoned but a lot of it tasted like it was using sub par ingredients and some like the spicy macaroni and cheese tasted processed. There is a very small selection of seafood as well so if you're the type to try and load up on shrimp and crab than you will be disappointed. The shrimp comes in containers with two small shrimp a piece and there was no crab. No prime rib either.
The service would have been good but we didn't get our drinks until after we had already finished eating. Overall I wouldn't recommend this buffet at all. I've had better ones at old dingy Vegas casino's. This is the Cosmopolitan, a five star joint. I still think the Buffet at the Wynn is the best in town.