I avoid those types of places. The last one we pulled into didn't advertise that they were 55+. Of course the owner's grandkids didn't count. My 55yo husband was welcome to stay. My daughter (23yo) and I (49yo) were told we had to stay someplace else. We laughed all the way to the next (nicer) RV park. We have laughed about that places for many years.
I grew up in FL where I was told, on many occasions, that I was riff-raff (and much nastier things) by the Yankees that moved to FL and hid in their so called "adult communities". I would stay on the side of the road rather than stay in a 55+ park. My experience with the residents of those types of places isn't good. They tend to be toxic beyond belief. I have always thought the people who stayed in 55+ communities did so because being in a 55+ community gave them an excuse as to why their children and grandchildren never visited them. If they say otherwise, they are obviously lying.
I've been in enough parks and campgrounds where the only people around were adults. Hard to blame kids for trashing the bathhouse when there are no kids in the park. But some people blame them anyway. An adult knows that you don't poop in a shower stall. When they do, they gotta blame someone. Folks just really want to believe it was a kid. And yes, it WAS an "older" adult who pooped in the shower of the Men's side of the bathhouse, SEVERAL TIMES! No kids were in the park and hadn't been in the park for several weeks. That is, until my husband figured out who was pooping in the shower stalls and told the Park ranger. Guy was kicked out of the park after the park ranger verified it. No more poopy shower stalls. This was a Georgia State Park. At that time, they had a blacklist for troublesome guests that was shared with all the other Georgia state parks.
But just blame kids. It's so much easier to blame a group that can't argue back.