Just my 2 cents here, but it has always been my understanding that +55 private parks are designed for +55, meaning, no kids.
But if you think about it for a couple minutes, why would you even want to stay at a +55 park with kids? What is there available for the kids to do? Play bingo and join the basket-weaving, or knitting group? I don't think so!
Considering you have 3 boys, age 6, the kids would REALLY enjoy State Parks and public campgrounds a lot more, so they can run, play, hike trails, climb trees, explore, and have other kids around to play with.