What type of negligence?
Sorry about the nitpicking, I'm just trying to convince myself not to do it on my next vacation but im slowly being convinced thats its not even remotely as scandalous as it sounds
It can be something simple as not changing the babies diaper to letting them cry for hours at a time. Or worse not watching them properly and letting them do things that are harmful or unsafe.
It's not scandalous. And chances are if you use a bit of common sense things might be just fine. I just don't think it's worth it.
And for me what I would consider a responsible amount of research and trusting my instincts I couldn't do properly in such a situation.