Probably. People can take photos in any public space.

You are entitled to a refund. That's it...............

This is a Q&A forum, not a place to "get help." Nobody here is going to reach out to you.

Of course not...............................................

Sue for what? You have no damages to sue for.

Can they asked? They asked. That's the answer.

a question for your lawyer. There is no "usual."

I wouldn't cancel any contract without having an attorney read the contract.

Can you? No. Can you hire an attorney to do so? Maybe.

None of us can answer that question and, even if we did, the answer would not be binding. Bring all the documents to a local attorney and have them...