Itīs allowed to leave the car for loading/unloading.
Yes, so always take some stuff with you
I once parkedunder an "Absoutes Halteverbot" sign to pick-up something from the tailor. When I came back 2 members of parking enforcement stood beside my car
. When I reached my car they told me, that itīs forbidden and very dangerous to park in the opposite direction. OK, that was right
. I promised to park in the right direction next time