I am not familiar with the Brooklyn dining scene, although I lived in New York years ago (Manhattan).
I've already lined up enough of the likes of WD-50 during my visit (in a couple of weeks) and I will be tired of those and will want something more soulful. Something hard/impossible to get in San Francisco, something unique to Brooklyn, perhaps.
One consideration - no car. Meeting friends for lunch in Brooklyn Heights. (Don't know where - but I'll let them decide.)
Afternoon schedule will depend on where I decide to go for dinner.
Interesting restaurant choices I gleaned from other threads to give you some idea of what I am looking for. Some are taken from older posts. Some may not be convenient - I haven't looked up their locations yet.
Istanbul Turkish Seafood Restaurant
Cheskel's Shwarma King
anything Arabic on fifth Avenue in Bay Ridge
Jay & Lloyds Deli
Mill Basin Deli
A few extra points for being in the Heights/South Brooklyn/Park Slope area, but as long as it's a convenient subway ride away, it will be fine, although it'd be nice if I don't spend too much time getting back to Manhattan after dinner.
A million points for food impossible to get in San Francisco.