Heartwarming Moments: Paul and Holly go to Tiffany's and look at jewelry, but ultimately they decide to engrave a ring from a Cracker Jack box. Instead of being offended or irritated, the jeweler gently observes the ring, then agrees to engraving it. Holly kisses him on the cheek so being so sweet.
Jeweler: I see. Do they still really have prizes in Cracker Jack boxes?
Paul: Oh, yes.
Jeweler: That's nice to know. It gives one a feeling of solidarity, almost of continuity, with the past, that sort of thing.
I Am Not Shazam: The protagonist's name is "Holly", not "Tiffany". "Tiffany's" is a jewelry store and the breakfast in question consists of consuming a pastry and coffee while browsing the shop window display.
Also, Lula Mae's middle-aged widower of a husband marrying her when she was barely fourteen. While it's implied that it was a chaste marriage (she remarks that it was annulled ages ago), it would still be extremely difficult, if not outright impossible, to depict such a character as sympathetic today.
Values Resonance: This particular line of Holly's from the original novella, advocating Extreme Omnisexual behaviour, is especially daring for the time the story is set in (1943-4), but rings more true today:
I'd settle for [Greta] Garbo anyday. Why not? A person ought to be able to marry men or women or— listen, if you came to me and said you wanted to hitch up with a Man o' War, I'd respect your feeling. No, I'm serious. Love should be allowed. I'm all for it. Now that I know what it is.