This article tells a story about a restaurant owner with BIG problems that could be solved by doing one thing.
Attract, or develop, an entire team of frontline personnel focused on customer service excellence.
Create, energize, and retain an entire team of front-line employees that make such a satisfying impression on customers that they are inspired to remember the experience, return frequently for more, and make a point to enthusiastically recommend the experience to others.
If you don't know how to do that, find someone who can teach you how to do it. A book about creating a great team is yet to be written.