You have a lawyer. You really need to ask them............

You have to sue them where they live, and you have to pay a filing fee and a fee to have them served. Probably not worth it.

IMO you have no case against the hotel............

I don't want to sound harsh but unless you are an attorney the only thing you can do is to help him hire one.

No you can't. This is not malpractice, it is not a HIPAA violation. It's doctors doing their jobs.

I would expect your discharge to impact your clearance.

Yes they can ban you. No, you can't sue.

You have not asked a question. The state may not be able to use anything you said against you.

You need to ask his parents. They decide who he dates.

Sure. You can block them on all your devices. Cheaper than lawyers.