How many rooms does the hotel where the fight between Floyd Mayweather Jr. and Marcos Maidana was held have?
Floyd Mayweather Jr. vs. Marcos Maidana:  The bout was held on May 3, 2014, in the MGM Grand Garden Arena, at the MGM Grand Hotel & Casino in Las Vegas, Nevada, United States, on Showtime PPV. MGM Grand Las Vegas:  The MGM Grand is the largest single hotel in the United States with 5,124 rooms.
5,124