When I walked through Williamsburgh about as fast as I could, realizing I was late for a minyan on the Lower East Side coming from (and by my dress obviously coming from) Crown Heights, people went out of their way to wish me git Shabbos. One Chussid in particular who really looked like he was racing against the clock made it a point to turn all the way around and wish me git Shabbos as he was running to his shul. Some WB’ers, like Yerushalmim, are a bit direct, but they are not davka rude.
In NY, people are aggressive. If it looks like you’re just lounging around on line, they think you’re waiting to ask someone something and they’ll cut so they can pay quickly and get out. That goes for all New Yorkers, not just Jews. Here where I live now, people are so lazy and disorganized that I have inadvertently cut because the line was so sloppy, and gotten away with it.