Two of my friends kids are still in. I think that's because he (and, he was usually an elder) believed he should make life interesting for his kids. He made sure they had something to replace the O.W. celebrations. In their case it was a special family day, based around his wedding anniversary, when everyone got and gave gifts. He says he understood the need for ritual in people's lives. So assemblies and the Memorial were always a big deal, with some build up to the events.
Additionally, he took them to classes in school holidays, I recall him having his kids taught gymnastics for about a year.
Interestingly, both children (now adults with their own families) do the same. One daughter takes her kids to swimming classes, and they swim well, well enough to be considered for the state swimming squad in the state where they live. The other daughter is involved in modern dance in the European city where she now lives, and she takes her child to classes.
In neither case do the elders in their congregation appear disturbed by those activities.
Interestingly, where he lives, a couple of JW guys have rented an apartment. They both appear to be heavily involved (possibly pioneering) but own good quality bicycles and most days in summer go on long bike rides. One even has a 'hot' motor bike and 'lairises' around on it.
Maybe this is just the more relaxed world of Australia.
I quote it all to be fair. And, I should also note that I have seen some absolute bastards in some congregations and also wondered why the branch put up with their stupidity.