Boraxo, you can always start your own private club. You can be as bigoted and arbitrary in banning anyone you want -- kids, blacks, gays, gay black kids, whomever you want.

However, if you choose to use a public facility (public, as in, not a private club), you'll just have to deal with the fact that not everyone is perfect.

Is it OK to complain about rowdy kids? YES

Is it OK to demand discrimination as a way to ward off undesirables? NO