To wonder about "the happiest place on earth?"

I'm watching a show on TV about Disney Parks, and was reminded of a conversation I had with someone after an anthropology course. The professor was talking about family incest and the different cultural views around the world on it. The conversation I had afterwards involved a relatively straightforward question. "I wonder how many families have relations while at Disney?" The person I was having the conversation with said, "well, they don't call it the happiest place on earth for no reason." I just stared blankly because they had...some sort of point.

Obviously I'm leaving details out about ages/race/religion/extended family. Really those aren't important. So is it normal to wonder about how many people get it on at Disney?