Masquerade Tower featured a restaurant and lounge known as VooDoo. An Italian restaurant, Mama Marie's Cucina, was named after Rio founder Tony Marnell's mother. The resort also featured the new Seafood Village Buffet, a separate eatery from the Carnival World Buffet. As of 1999, the Rio's 15 restaurants served an average of 20,000 people each day. Its busiest eatery was the Carnival World Buffet, averaging 7,000 diners daily. The Rio hosted the annual James Beard Foundation benefit dinner for several years during the 1990s. The resort also hosted an annual Italian food festival. The property added four new restaurants beginning in 2002. Among them was Rosemary's, which replaced Napa after Palladin's death in 2001. Another addition was the Gaylord Indian restaurant, part of a worldwide chain. In 2006, musician Prince opened an Asian restaurant known as 3121 Jazz Cuisine, named after his recent album 3121 In 2011, the Rio added a Burger King Whopper Bar. It seated 58 people, and was one of five Whopper Bars in the U.S. Unlike typical Burger King locations, it offered beer and included a hamburger bar with 30 toppings and sauces. A dim sum restaurant was added in 2012, with seating for 350 people. The Carnival World Buffet is frequently considered among the best in Las Vegas, and was the city's largest buffet as of 2011, with seating for 733 people. The Seafood Village Buffet was merged into the Carnival World Buffet in 2015. Guy Fieri opened a Mexican restaurant, El Burro Borracho, at the Rio in 2016, replacing a seafood restaurant known as Buzio's. Sapphire Pool On May 30, 2008, the Rio opened the Sapphire Pool in conjunction with Sapphire Gentlemen's Club. The daylight-hour, adults-only club surrounded one of the property's outdoor pools and featured dancers. It opened with a $30-per-male-customer admission price. The venture was a high-profile joint venture between a casino company and a topless business, and was notable because the possibility of bringing in criminal activity at the club had caused the Nevada Gaming Control Board to balk at previous collaborations; some in the media questioned whether the risk was worth the potential payoff for the hotel. In late July 2009, the Rio hotel asked the Las Vegas Metropolitan Police Department (LVMPD) to do a routine undercover investigation of the Sapphire Pool, as casino-resorts in Nevada are held responsible for the activities held on their premises. The request was a