As much information as possible. I was NOT the only one that has asked that question. The OP has yet to answer these questions. That's why it was asked - AGAIN.
The OP put her business out on these boards. I just asked a sensible question. Her answer was vague. She was so specific on her daily lice treatments with her daughter and so vague on informing Disney about lice in a room. And you can roll your eyes all day long, if that makes YOU feel good, but I'd like to see how pleased you'd be coming behind a family who choose NOT to offer that information to whatever hotel they stayed in. How happy would you be with that - inconvenience?
The OP has been asked SEVERAL times in what hotel she stayed. It hasnt been answered yet. I'm not saying the OP didn't tell Disney, but its not an intrusive question if the OP placed her business on a VERY PUBLIC forum. ASKING FOR ADVICE. Some of the things that she was advised to do was to tell the hotel. She asked, we gave. Especially on a forum with individuals who happen to have a love for that place we call Disney. You wouldn't want Disney to have a reputation of spreading lice? I'm sure you care about Disney too. To be honest, my concerns are about others, as a matter of fact, its highly unlikely, probable but unlikely, that I will get lice. You can now roll your eyes.

I hope your day is brighter.