Public is no longer public???

Ok so like last Saturday my uncle had a going away cook out for my cousin that was getting shipped out. I haven't seen my cousin or my uncle in a while and my husband actually had the day off so we went. We met my uncle at Indian steel park and he had asked me to save a table. I haven't been to that Park since my mom got married there, so i thought it was a first come first serve type of thing. I saw some benches under the ramada open so i go to save them, then i notice that the grills are all locked up. There is a paper on the table talking about reserving the Ramada, I calm the nunnery hoping someone would be kind and come open the grill. Of course no one answers then i see a park person driving around so I go ask since no one has reserved that Ramada if they can open the grill. The lady said that she couldn't open it to just anyone. That if we wanted to use the grill we have to reserve it and pay 25 dollars AN HOUR!!!!! I am sorry but to me that is crap.  Any who so i said ok and left and called my uncle, he said that was fine and he brought his own grill. So we set up abd start the grill,  we were just sitting at the benches and my tia is in a wheel chair so it was easy for her to be on the concrete. We are not even sitting there for 5 min when the lady comes up and tells us we can't even sit there!!!! Can you believe that!!! I told her so the public park isn't open to the public?  She said no that if we wanted to sit there we had to reserve it!!! So I said what happens if we don't move she said she would call the cops!!! I asked if we could sit in the grass abd she did no!!!! Ok by this point I am pissed!! We Ard native American and yet we can't use our own Park!!! So in the end we hag to move to the grass but i was pissed i wanted to push her into the lake!!! Since when is it that you can't go to a park and sit at the benches!?! Since when did a public Park become not open to the public??? I want to contact a tv news to see why the city of phx is doing this.  I know chandler doesn't lock down its grills or makes people move from a Ramada. Oh i am still pretty update about it because a public Park should be public and your shouldn't have to pay per hour! Especially if your native! I think that lady took her job to serious but it did leave a bad taste and i am not sure I'll ever wanna go back to that Park :(