"The Girl from New York City"

I listened to Summer Days (And Summer Nights!!) yester-day and noticed a couple things about "The Girl from New York City."

"Night and day" in the line "We'll turn 'em on with all the things that will be happ'nin' night and day" is a temporal merism.

The chorus shifts the rhyme scheme so that instead of occurring at the ends of the lines (as in the verses), the rhyming is now internal:

The California guys all got their eyes on that girl from New York City

The L.A. boys all heard the noise about the girl from New York City

The phrase "girl from New York City" is essentially rhymed with itself, and to some degree, this indicates how the "California guys" and "L.A. boys" are fixated on her.  In the same way that they continue to look at her, the phrase "girl from New York City" retains its position in the line.

"The Girl from New York City"

Yester-day I listened to Summer Days (And Summer Nights!!) and noticed a small thing about "The Girl from New York City."  The "every-" part of "every day" in the line "They took a small apartment down on the beach where you find them every day" is sung with three syllables rather than the usual two.  This pronunciation gives a sense of the frequency of how often the titular girl and her friend are on the beach.