Yes, that’s the place, and picnic areas can make for great places to be social, hence it may be eligible. And I would imagine that people still use it even after the shop is closed, either before they open or after they close. Here’s the clarification on picnic areas.
There’s nothing that says it has to be connected to the shop per se, so if the shop proves to be a tough sell, the picnic area may be an easier nomination to get approved.