Bob, we family camp still, grown kids with their spouses. When car camping, several tents will pop up, I'll string up a couple of hammocks, and maybe a pocket hammock or two will also get put up by someone for day lounging. Everybody sleeps where they want. My wife and daughters all love hammock camping but for sheer convenience they usually end up in the tents. I'm kind of a diehard and always opt for the hammock....sleep better than on the ground.
So next time you family camp, throw up some options and see what happens. It's hard to get my wife/kids OUT of the hammocks in the morning.