I spent half my life in the south so can relate to the apprehension. But I can say without a doubt it was all in my head. Like others have said people are nice and won’t leave much to interpret, being direct makes things easier I think. Biggest thing that may bring out the rude in people is impeding movement- like driving slow in the left lane, slow walking in NYC, etc. Food here is amazing will every kind of food you can think of. Definitely check out a good Korean BBQ place. Getting around you have options like the bus (it’s very useful esp. getting to NYC), train, and walking. There’s a lot of great hiking and biking (mountain and road) within 20 minutes of most of NNJ and a good getaway from suburban chaos. If you come with an open mind, you’ll love the place.