It’s a bold move for the Rio, an off-Strip casino that opened more than 30 years ago. The Rio Hotel & Casino is replacing its Carnival World Buffet with the Canteen Food Hall, a hub that will bring in five new dining destinations - many with ties to restaurants currently found on the Las Vegas Strip. The food hall trend in Las Vegas is going absolutely nowhere, with yet another casino swapping out its buffet for a new food court-style dining venue.