RJV - Your suggestion is ideal! I can see the ducks on the pond in my mind's eye. Alternatively if Hartington was full of tourists (not quite as bad as the droves who flock to Matlock Bath!) then a few minutes drive would take one down to the Manifold Valley, where one could pick a quiet spot ideal for a picnic by the river instead. Then there is of course the added bonus of Ecton Copper Mines, caves, archaeology and the remains of the Manifold Light Railway where one drives through the Swainsley tunnel. I won't dream on.
Incidently the old cheese shop closed about four years ago, it was run by Dairy Crest who didn't take online orders. I see the new owners have been there for about two years, do online shopping, which is a bonus if you live miles away.