In Happy Days, the diner was originally owned by 'Arnold' (Pat Morita), who only retained the moniker because he never bothered to change the sign from the previous owner. After Arnold got married and moved to Japan, the diner was sold to Al Delvecchio who remained until the series’ end.

Set in midcentury Milwaukee, this TV show followed the fortunes of a close group of teenagers, chief among them Richie Cunningham (played by Ron Howard) and Arthur Fonzarelli (Henry Winkler), familiarly known as the Fonz.

Arnold's Diner was a main place where all the characters could meet and discuss problems in their lives. Also, it did not matter if people were sitting comfortably in their favorite booth, or actually working there, the diner setting gave the viewer a feeling of comfort. It was as if you were actually sitting with, or being waited on by members in the show.

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