Test your luck at the home of the Queen's Machine, the largest slot machine in the world, with a two-night stay at the Four Queens Hotel and Casino in Las Vegas, Nevada! Restrictions: Expires 6/7/2014. Valid Sunday thru Thursday. Excludes holidays and special events. Reservations required; subject to availability. Transportation, gratuities and other incidentals are not included. Must be 21 or older to redeem.