The best way to answer all of these questions is to come out to a neighborhood meeting. There's one tomorrow night! Look for a post in the blogs with details.
Having lived in several nearby communities (Pennington, Ewing, Hightstown, Yardley), the one thing that Hiltonia has over ALL of them is a strong sense of community. I went years before I had met all of the neighbors that lived around me in my last neigborhood (Mt. View section of Ewing). In Hiltonia, I had met every neighbor that bordered my property (and then some!) within just a couple of days.