It may be Sandgate. There's a well known photo called "playing shops" where the girls use rocks to layout the perimeter of the shop on the ground, and also to represent items for sale. Could possibly even be the same girls!
Super photograph. It looks like the taller girl is carrying a box of pieces of bread, but could be sandwiches or cakes as you suggest. Does it say "CREAM" on the box? Looks like a flock of hens in the background. The height of the wall behind suggests it is near the city centre.