That's my old house with the blue car and a my old white Corolla in front of it. The blue car wasn't mine, but I eventually just parked my car out there in a spot where I could make sure I wouldn't get blocked in.
But at least I wasn't guilty (at least in that picture) of putting out chairs
I know those people in the other pictures too and I'm pretty sure they were original stadium donors. So yes, you have the "official" right to park there. But they've earned the "unofficial" right to put chairs out