Reminds me of when i camped at Lake Whitney a few weeks ago. I was the model citizen, an ice chest full of steaks and chicken to smoke that night and the next......as we pulled into the park I conscientiously asked the gate attendant if I could cook with charcoal in either the park provided grills or my own covered one....thinking the ban didn't extend to that. "No" was the answer. And like a good citizen, I followed the ban, saving my food till I got back home and resigned to eating sandwiches.
Meanwhile, the guys in the spot next to us on the 2nd night, after we'd eaten our 2nd meal of sandwiches, proceeded to light their grill and cook fresh hog meat that one of the guys had killed with bow/arrow a little ways away from the campgrounds.
Moral of the story: if you don't ask, you didn't know it was against the rules.