>In North America any adult that is not the parent is a potential kidnapping rapist

But the adults at the sleepover are the same as the adults that watch the kids during daytime :/

>In Canada, child services were called on a mother of three for letting her children play outside in their fenced backyard while watching from the window.

When I played in the sandbox my father could not see me from the house. Just our dog, and the dog would watch me :) So if he saw the dog he know I was ok.