In her 1985 book Elvis and Me, on which Sandra Harmon collaborated with her, Priscilla Presley writes that by the time filming was to begin on Clambake, Elvis's growing distress with the quality of his films led to a despondency accompanied by overeating that saw his weight balloon from his normal 170 lb (77 kg) to 200 lb (91 kg).
Format Productions also created title sequences for several TV series, including I Spy, Honey West, the animated characters on the television variety show Hee Haw, animated various TV commercials, and created film title designs for The Glory Guys and Clambake.
Jack Teagarden, Tommy Dorsey and his Clambake Seven, Coleman Hawkins, and Doc Evans in 1947 also recorded the song under the title "Original Dixieland One-Step".
Mark Chenevert continues to perform as a respected clarinetist and sax player and has played and toured throughout the United States with bands that include Hypnotic Clambake, Chandler Travis, Stone Lily, and others.
The Sunday Times used Operation Clambake's resources while doing a January 2007 story on Narconon and its links to the Church of Scientology.
Meehan was noted for the annual summer clambake, which he held at his residence in the Somerton section of Philadelphia, a heavily Republican stronghold.