I took mine the first time I went and I hardly used it. In fact, the only time I remember, was when we were down under the Brooklyn Bridge and it was pretty late at night so it was dark/long shutters speed. I'm trying to think and, IIRC, I was going to use it at the top of the 'rock but I think I got told I wasn't allowed by security, so I just used Gorilla Pod and propped it on some brickwork. Same scenario in Grand Central Station.
Even the GorillaPod, I think I only used it a couple of times, just about everything I did was handheld or "adapted" to the surroundings (ie. barriers, lamp posts, walls..). Apart from Central Park, most of the places you go will be too busy to try and set up a tripod, IMO.