Second, don't be the person who lets your dog pee or worse on someone's lawn, and always carry a plastic bag to pick up your dog's mess when you take it for a walk. Most towns impose fines for allowing your dog to relieve itself on someone's property, especially if you don't clean it up. If the property owner catches you and complains to the police, you could end up with a more expensive summer vacation than you had planned. People can take instant photos with cell phones these days and use them as evidence, even at night.
Third, don't be the person late at night shouting, fighting, or even singing loudly while walking along a street or sidewalk where there are houses, playing football, soccer, or any other game in the street, or blasting loud music at a party after 11:00 p.m., even if you are just sitting around a pool. Some of your neighbors are probably trying to do things like watch TV, read a book, have a conversation with someone, or more importantly, sleep. If it is after 11:00 p.m. and you can be heard outside more than a couple of feet in front of you, you are being a jerk. Whether they are full-time, part-time residents, or just renting, many people are living near you; some have to get up early to work the next day, sometimes even on weekends. Some are elderly or families with children. Even in summer, most towns have rules that can get you fined or arrested for disturbing the peace after 11:00 p.m., even in a hotel.
Fourth, don't shout obscenities loudly at someone even if you are having an argument while you are in a public place like a street, beach, restaurant, or even a bar. No one wants to hear your foul language or your argument. This is especially true when it's late at night and you are near houses where there might be children. It's summer. People often have their windows open, especially if they live at the shore and want the ocean breezes, and many of those people have children. No one, especially children, should have to hear that.
Fifth, don't be the inconsiderate person who says, "So what? You're getting their tourist money," and blow off complaints about such bad behaviors. Would you do those kinds of things anywhere in your home town and not expect to get thrown out or hit with some other kind of consequence, no matter how much money you were planning on spending? Of course not. And not everyone makes money off of your tourist dollars; many people have totally unrelated jobs. The ones who do depend on tourism still expect and deserve ordinary courtesy from everyone, or if you can't manage that, at the very least, not destructive behavior.
Treat the place you are visiting as you would want someone to treat your home. Or stay home. Even Atlantic City isn't hurting so badly that its business owners want destructive jerks who will chase away other, decent tourists, residents and customers. Hopefully the well-mannered visitors still outnumber the obnoxious ones.
Author's note: I grew up in a shore town, and my elderly parents still live there; they have been dealing with these same kinds of problems, summer after summer, even after 54 years on that island. I visit them frequently, year round, and am appalled at how much worse the levels of destruction, trash, and stupidity seem to get each summer. The rest of the year is fairly quiet and clean. The problems almost always occur with the influx of tourists in the summer. Recently I was shocked by a Facebook discussion on a site for people who supposedly love that shore town when some people made excuses for that kind of behavior, blew it off as nothing to care about, or were even nasty and offensive to those of us who expressed how destructive and awful that kind of behavior is. It is not excusable, ever, to destroy, physically or otherwise, someone's property, space, sleep, livelihood, or their vacation experience, whether it's by the common problems I discussed, above, or other disturbances.