Well diggum, if you have "never been turned down" (as if you needed to ask, to begin with), then I suppose you're batting 100%. Great! I'd just be afraid of a "no", where no one would previously have really cared less or noticed (until I asked). I have seen that happen, several times in fact: A park where md'rs go unbothered. Then one day, someone feels the need to "ask", and is told by some bureaucrat across town "no"

THAT is what I'd be afraid of, and I've seen it happen.
So again, if someone is skittish, hit the books on your own. Then there's a happy compromise: You wouldn't exactly be able to say "I checked with so & so, and they said yes", but you would still say "I checked all the written codes, and there was nothing to prohibit this". That would be a fair compromise between these 2 opinions, eh?
EZ-rider, where do you come up with this "$250 fine"? Can you cite such an example? I suppose there is probably a few very EXTREME exceptions that someone can cite, but I would say those are extremes and not to be taken as norms. I mean,
sure, now and then a motorist is roughed up and thrown in jail for a tail-light infraction. Should we be afraid to drive? The trouble with the modern age of the internet, is it only takes one of these exception stories to get published, and WHAM, newbies run cowering to public officials thinking they need permission and such. I can probably publish exceptional stories of persons "fined" for throwing a frisbee (maybe an overzealous cop slapped them with a fine for damaging something, or athletic field use without the proper reservation, etc...) and will that mean that all frisbee enthusiasts will think "gee, I need permission to throw frisbees now, because afterall, lookie what happened in Billy-bob-town, Alabama last month!" An easy compromise for those who are skittish, is to do your own checking with park's dept. written rules, not asking live persons, lest they give you their opinion, rather than written fact. Personally, I never do that, but for those that feel the need to, that is a happy compromise.