From the Marriot Website:
Our founders, J.W. and Alice Marriott, started with a small idea: a root beer stand. From there, it grew into a small hotel business, and then another, bigger one. Together they created something that changed their future—and maybe yours. A great career is about seizing new opportunities, building meaningful relationships and being a force of good in the world.
Add The external guests are the guests who patronize our hotels and who we treat as guest for life. Because of this they return over and over again helping us to be ever increasingly successful. Our Internal Guests are our team members who accomplish the difficult task of building guests for life. We can only expect excellent service for our external guests when we treat our internal guests with the same excellent treatment that we demand they strive for.