Oh yes - America does have regional cultures which are quite distinct.
New Englanders, for example, are rather different from Southerners, and they are not like Midwesterners, or Southwesterners or Californians or the people of the Pacific Northwest.
And even among them, there are subdivisions - upper South, Deep South, Texas with its very own regions, etc.
You know all about it much better than I ever could hope to do, I presume, so I‘d rather not waffle on for too long, lest I get thrown off FR for being such an utter bore and insufferable know- it-all😀
I try to. But as you know, there’s always more to learn.
Have fun out there. Enjoy the day.