i occasionally use parent and child parking spaces, but only after 9PM my reasoning is the little sprogs should be in bed by then so parents don't need a special space at that time.
and i rank people who park across 2 bays at the same level as those who park in disabled bays,
only to$$ers take up 2 spaces if you can;t park properly buy a smaller car.
if i can get my barge of a car into those smaller spaces then so can everyone else.