OK. I work in travel hospitality and this story is from the cafe car.
So I'm working in the upper bar and notice a little girl several times now walking around by herself. I ask her where her family is. "Oh, I don't have a family," she states while shaking her head.
Later on I see her sitting with a family in the upper lounge, and figure "Oh, she was just being silly/weird and is with her family. Good." She was sitting on a grown man's lap, there was a woman and other children with him.
Turns out, the little girl's mom was ho-ing it up with random other male passengers and letting her daughter do whatever the hell she wanted apparently. That man's lap she was sitting on? Didn't know them at ALL.
They were indeed a family. They said the little girl came up to them and I dunno, I guess the family didn't know what else to do?
The dudes in charge were finally told about the situation, and they told the mother that if she didn't take care of her daughter, they'd call child protection services on them. I think she finally realized she was a mom and kept her kid close to her after that.
Some people, man. I'm sure there are other stories but that one really sticks out in my head.