TOMMY"S!
When passing through and feeling hunger, go to Tommy's diner. I remember eating there 4 times in 5 days and having a waitress that looked just like Winnie Cooper from the Wonder Years help us.
Friendly staff, but even better burgers.
Grab a shake, fries and a burger and you are all set to hit the beach. My buddy asking the waitress out, and she turned out to be 38. He was 18. She smiled and laughed. At him. It was beautiful.
TOMMY'S FAMILY RESTAURANT 1409 S EL CAMINO REAL

San Clemente train tracks, California
Palapa
Lost in the sea.
Bagel Shack in San Clemente