No parking, seen people fishing, maintained lawns, have a picnic
It is not forbidden, but I would not eat fish from the East River.
Yes you can. I always see a lot of peope doing that!
I've never really seen anyone fishing. It would be awesome to catch one and grill it right there.
I've seen some do it. I wouldn't recommend parking there. There is a public parking right when you cross the bridge. I have seen hospital police come by and ticket illegally parked cars. You need a permit to park on the grounds.
I don't believe that you can.
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