Brooklyn mansions, food fair, and Prospect Park

First we'll walk through the tree-lined streets of elegant Ditmas Park, packed with lovely Victorian mansions in a suburban setting--you won't believe it's still NYC! Then we'll walk to nearby Prospect Park outdoor lunch at Smorgasburg, a giant food fair. Afterwards we'll explore this big and beautiful park for a while.
DISTANCE: About 4 miles.
LUNCH: Buy at Smorgasburg or bring your own.
TRANSPORTATION: Q train to Church Ave. Consult MTA planned service changes for weekend changes on your subway lines.)
RESTROOMS AT START OF WAK: Please consider using the ones inside the station before you exit. There are also bathrooms outside, which I will describe when you arrive, but they are less convenient