The world's largest hotel company spent its first 30 years without a hotel. It started as a root beer stand in 1927. The first room didn't open until 1957. The man behind it was J. Willard Marriott. In this episode of Outliers, we explore how Marriott turned one root beer stand into a hotel empire, without a master plan. Oh, and along the way, he invented the airline catering business. This is…