I booked a room at mgm at the skyline Terrace suite and got an email welcoming me from someone with the title "Prime Suites Specialist" and said if i needed anything to call her. Might be a silly question but is this a 'host'
sounds more like a concierge type service or a "host" for your room needs(not a casino host) but i might be wrong.
as gpenguins said, not a casino host but more of a hotel concierge to assist you with questions and advance booking of restaurants, shows, spa services, etc.