I've learned never to expect anyone to know any of my rules that I have not publicized.
Looking at the website, I see nothing mentioned about commercial photography in the park. They should develop rules and post them on the website. There should be signs at the entrance that alert photographers to go somewhere for literature or a briefing on photography limitations. They may need photographers to get permits--not necessarily paid, but to block out appointed slots to limit the amount of commercial traffic during the day or week.
This is no different from the rules many communities have about commercial photography, and although it's chafing from the viewpoint of a commercial photographer, it may be necessary.
But if all this park has is that hand-printed sign, then they haven't done their own due diligence to make sure their sensitivities are made known.
Ordinarily, yes. But the problem is (or was - the sign has come down) with portrait photographers leaving the trails (or blocking them) and trampling off trail areas. There are plenty of notices about staying on the trails and this park, unlike other city parks, is operated as a nature center. It is well known that public access is limited and wildlife and plant life preservation is it's main purpose.



