I've only been to Atlantic City once, a couple of years after the movie was made. It was just a quick drive around the area, with only a couple of stops: I walked into one of the then-new casinos just to have a look around and see what it felt like since I'd only ever been in Vegas ones. And before driving back out of town, I stopped and ate in one of the "castle" type of jernts -- one of the White Castle imitations -- oh, that's what it was -- White Tower. I think.
It was just a day trip while I was on a longer visit in the Philadelphia area. I was still living in Redondo Beach, and I have no memory of where I first saw the movie. But I distinctly remember a few years later dropping in to see it at the theater in the Pan Pacific building which was playing second-runs in its last era before the fire.
I've always meant to go back to Atlantic City and take in other interesting old parts (those that remain) of the Jersey Shore, but I never seem to get around to it. It's actually been a goal since childhood to go into the convention center building, whatever they call it now, to see and hear that world famous pipe organ. They've been restoring and taking good care of that, and I really must do it.