At North Market I’ve seen scooters park frequently on the SE side of the building, under the roof, outside, near the picnic tables. (Basically behind the loading dock.) Nothing to lock to, but I once parked there for several hours and not only did nothing happen to me, but nothing happened to the sweet helmet that was sitting on the nice white Vespa next to me. And I think it would be difficult to pull up a car/truck/van next to that area, so it’s probably not a bad spot. (Even for the paranoid like me.) Please do not park at the bicycle racks, those are for bicycles. And of course, if you ever have to ride on a sidewalk (*cough cough*) then be very careful, go slow or best is just to walk it – with the motor off.
Let the record show I am not a lawyer and my advice, legal or otherwise, is worth nothing. 🙂