The Carnival World Buffet is one of those buffets you have to try in Vegas. I been here a few times and would say it one of the best buffets in Vegas. All the food taste great. I'm Asian and I think there Asian selection are good. The ducks not bad. They have a lot of variety. I would go to this Buffet instead of paying $45 bucks to go to the Seafood one that also located in the Rio. This one has lots of seafood and good food. They sometime have coupon in the free magazine in front of fashion show mall. If you visiting Vegas you can take the free shuttle that located next to Bally's, it drops you off right at the Rio. The service is also good the servers come by and fill your drinks up and clean the tables quickly. This buffet was also feature on the Food Network channel as one of the biggest Buffet and was also awarded many awards for being one of the best buffet in Vegas. Also locals can get in with a discount.