Ghost Donkey's hidden mezcal and tequila room inside The Cosmopolitan's Block 16 food hall runs under Mariena Mercer Wright's Chief Mixologist program — Mercer has been the architect of Cosmopolitan's beverage identity for over eight years across Chandelier, Vesper, and the local Ghost Donkey menus. Property mixologist Andrew Pollard executes the cocktail program at the venue. The room is the original Vegas speakeasy template: discreet pink-neon door, agave-deep spirits library, the truffle nachos as the signature edible. For Vegas's most-credentialed mezcal program inside the Strip's most-respected cocktail property.