You know, I think if something like this happens again... I'll take a pic with my I-phone. Maybe have my co-pilot record me going towards the visitor's center just so that the 'players' will see that we are recording.
I don't want to have to pull out my weapons, but will if I have to. Just letting the 'guys' know that they are being watched and recorded are a plus.
Being attacked at the gas pump is something totally different. That's a whole different scenario. (someone on the Prevost site had that experience).
Be safe!
MM.