"The particular SS parks on the wrong side of the street (itís a narrow residential one, so you canít park on both sides), in the bend of the road, right in front of a fire hydrant and a no parking sign. Every day."
If this person is actually parking (as in leaving the vehicle) a call to the police will fix the issue fast. If they're not leaving the vehicle they may not be breaking any laws (call your local police to find out) and if they aren't breaking any laws or interfering with traffic flow then I can't call them SS.
"If I want to bring them cheese sticks, it's HER job to remind her DD that she can't have one, even if I offer to share. It's not my job to think "Oh, we can't take these oatmeal-raisin cookies to the playground. Some other child there might be allergic to gluten or raisins or eggs.""
The gist of the article is that you shouldn't leave that sort of snack laying around or throw it on the ground, not that you shouldn't bring it at all. I think it's reasonable to ask you not to throw your cookies around like Frisbees or let the kids eat them while they're crawling around in the plastic tubes (not that I expect an e-Hellion to do that sort of thing, but the article wasn't just for us).