Great Neck is entirely different community. It does not have the clique feel about it, and you see evidence of people actually living there. I am assuming nothing. I posted what I saw, based on numerous recent trips through the area for Long Island errands.
Oh WOW...you actually "drove through" a part of Garden City, a few times, which makes YOU an "expert"! ROTFLMSO!
That whole area of Long Island was and no doubt still is, a place I had friends, went shopping, ate in restaurants, and even knew someone, whom after college, had a chi-chi yarn business in Garden City.
My parent's summer home was in Glen Cove, on what had once been J.P. Morgan's private island estate. I did far more than just "drive through" many of the towns on the North Shore...FOR MANY YEARS. I knew lots of people, well, from all over. ;^)