Well, I just got back last night, and had a good time in the city...though of course a long weekend is not enough to begin to scratch the surface of what one can see and do in New York City and the area.
I did end up taking I-95 to I-278 over the RFK (Triborough) bridge, whence it is the BQE. Going to the park I tried to follow NY27 (basically Prospect Expressway to Canton Avenue) and there catch Flatbrush, but the signage for NY27 was a bit lacking and confusing and I ended up muddling around a few couple narrow, local streets before getting to Canton. Going back, at the recommendation of the very helpful park rangers, I took Flatbrush all the way, which is a better route on the whole (and free of any low clearances, for those who may be interested). This road can be rather congested if busy, and New York City driving is something of a world unto itself, with trucks unloading from the travel lanes and some sort of a secret code to horn taps and so forth.
It turns out there is a perfectly fine dump station at Floyd Bennett Field, despite it being omitted from the campground map. (Well, perfectly fine aside from the wash out hose being missing from its spigot, but that's relatively minor.) I didn't see any obvious signs of drugs or sex or dead bodies, though I wasn't going out of my way to hunt them down either. The worst lawlessness I observed were some people having fun in a car by attempting to wear out their tires in one night, doing donuts and so forth on the (enormous) concrete pad around which the RV sites are scattered. They did at least keep pretty well away from the RVs and other people and vehicles; but even so I wasn't at all disappointed when the park police came and put an end to that activity.
