Dressing the Part, act like you belong.
There is something to be said about looking the part. There are a few hotels that I take photos at in SF, but also if I need to kill time, if I want to have a meeting, if I want a free cup of coffee or even better a free breakfast I will go to some of these places dressed like a fucking BOSS, and no one says a thing. I actually like I belong I act like I've been here and people treat me as such.