 Alligator wrestler Tahar Douis performed at which Las Vegas hotel, that was later demolished to make way for the Global Business District? 
Tahar Douis:  By the middle of the 1990s he was wrestling gators as part of the "Splash" show at the Riviera in Winchester, Nevada on the Las Vegas Strip. Riviera (hotel and casino):  It was last owned by the Las Vegas Convention and Visitors Authority, which decided to demolish it to make way for the Las Vegas Global Business District.
Riviera