My condolences, from York County PA to York County VA.
I open carry everywhere and for almost 20 years, all very
positive responses and reactions up here.
I'm anticipating wearing sweats or shorts, something that doesn't
work real well with carry, open or concealed, at least not with the
holsters in my collection.
I am not aware of any signage or policy at my location, right now
I'm just trying to figure out how to carry, if it is even possible.
Obviously someone at your place found a way, and damned shame
about the reaction.