daedalus, if you read back through my posts on the subject, I concur that if a person thinks maybe the wooden sign at the entrance of a park is not complete enough, that they can go to the website of whatever entity they're wondering about, and look it up there. Or if a city doesn't have a website rules, then it is usually public information that anyone can walk into any city hall and the books of city muni. codes are right there, on the front counter, public information.
It is better to look it up ones-self, rather than to ask someone. Because even if you try hard to phrase it in a way where you put the burden on them, to produce such an actual written rule (ie.: "are there any rules that prohibit such & such?"), I have heard of instances where some desk-clerk still interprets that as you asking their permission. Ie.: their answer might sound like "we would prefer you didn't". And if you object and say "but where is that written?", guess who's going to loose that debate?

And mind you, perhaps they really didn't even care, nor would ever have noticed (till you asked).
If, as you say a person could be ".... caught today where they should not be ...." then that pre-assumes that ...... they're where they shouldn't be, right? And that law, or rule, or whatever, is therefore somewhere, on books, right? Thus, no need to "ask permission". We can satisfy ourselves if a rule exists or not.
You may ask "well, what harm does it do?". Here's the harm: It gets rules (or "clarifications") written where no one ever cared before, and it gets bootings, where ..... that same kiosk clerk who fielded the question recently, sees another md'r (whom he previously never would have paid a second glance to) and thinks "aha! there's one of
them!" and starts booting others. I've seen this happen before

I can think of beaches in CA that have been detected since the dawn of time, and it's never been a problem. However, if you were to look into the minutia enough, you might find something that ......... given enough morphing, could be applied to md'ing (cultural heritage stuff). So you tell me: If no one's ever cared, why would someone feel they need to ask now? Why not leave good enough alone?