My personal experience is that it is not the sounds of children playing that bother me, it is the late night loud music, drinking, fireworks, and carrowsing being done by the over 18 crowd, especially at some of the more remote camping areas. On a recent whitewater canoeing trip last summer, we shared a wilderness camping site with another group who insisted on loud music and fireworks till all hours of the morning. I was sure they were going to set the forest on fire. Next time I will bring a set of construction ear plugs to try and at least address the noise issues.
Dave W - 2013 Escape 19' and 2011 Toyota FJ Cruiser
"You've got to be very careful if you don't know where you are going, because you might not get there." - Yogi Berra