You can, but it is a very complicated area. Definitely not a DIY project. You will need to retain local counsel.

You are an eye witness. That is proof. Call the cops.

The girl needs to speak to hear parents. The adult should seek mental health treatment for his attraction to children.

IMO yes they can. As noted, the issue isn't masks, but what is written on them, which the school can definitely regulate.

You will have to check the terms of agreement you agreed to when you signed up with Expedia. They will spell out your rights. You probably signed...

Speak to your parents. ...................

Quit posting on an open forum. Hire an attorney. None of us can answer "why."

We don't know who they are, but this is not a legal matter. Speak to your parents or a school counselor or other trusted adult.

Sounds like a scam but, even if not, not grounds for a lawsuit.

This is a Q&A forum. You have not asked a question.