In addition to Jorn's comments which I endorse, another reason for not
feeding bees in the open is consideration of your neighbours.  If the honey
is exposed close to the apiary the scout bees will advertise this by using
their round dance which is not specific for distance or direction.  Until the
bees home in on the honey they may well annoy your neighbours by looking for
sweet things in their houses and gardens.
Chris Slade