... 3320 Las Vegas Blvd South. The Sans Souci was open at this location from 1955 to 1962. Next came Oliver's (New) Castaways, 1962-1963. Oliver's name was dropped and the Castaways had a good long run at this address from 1963 to 1987. The property was then leveled and cleared to make way for Steve Wynn's first super-resort The Mirage which opened in 1989.