Proper way to ask for a bathroom?
I know トイレ is casual, but when do you use お手洗い? Because I will go into a restaurant or something and I'll normally say すみません、トイレはどこですか?so is お手洗い for at your job or school when you're talking to your boss or teacher? Because formal situations are different for me compared to Japan.
化粧室 I guess is only used in super formal, or specific situations, like at a department store or idk when talking to the emperor lol.