Beach passed away in Honolulu, Hawaii, in June 1989, at the age of 81.

He is known for starting Don the Beachcomber during the 1930s in Hollywood, California, which was expanded to a chain of dozens of restaurants throughout the United States. He later built the International Market Place and additional establishments in what was then the Territory of Hawaii.

Beach is also generally credited with establishing the entire tiki drink genre. He created dozens of recipes such as the Zombie, the Cobra's Fang, Tahitian Rum Punch, Three Dots and a Dash, Navy Grog, and many others.

He was an Army colonel during WWII and is buried in buried in Section B Site 1-C of The National Memorial Cemetery of the Pacific in Honolulu.