The time may come (if you are very, very, lucky) when your Master will feel he can trust you in public. He’s going to want to know that you won’t embarrass him, so the first forays will likely be to a semi-public setting, like a locker room or the howers at the local pool.
He’ll need to do some initial stress-testing, to check your stability, so the first such sessions are likely to be a little rough and messy, with plenty of humiliation in the form of strangers kicking you, pissing on you, and laughing at you.
Such testing can be hard to take, but rest assured that if you carry yourself well he will eventually allow the men to skull fuck you and rape you properly. Be patient and work hard, and eventually, you’ll get what you deserve.