...and a lot of tourists!
I live very close to 30 Park. Current residents (myself included) very much enjoy the fact that FiDi / TriBeCa is still quiet at night. It's almost the peace and quiet of suburbs, yet all the benefits of being in Manhattan. Plus there's so much transit concentrated near Fulton Center that you can get practically anywhere in an instant.
With that said, the number of residents in FiDi is rising quickly, thanks in part to buildings like this, and many others going up right now. The area has changed noticeably in just the past few years, with momentum seemingly accelerating. There's a Target opening up a block away, and a second Whole Foods coming soon. I know those are far from exciting developments, but they speak to the increasingly residential nature of the neighborhood.
As more people live in FiDi, the dining and nightlife are starting to follow.