Check out the Gothamist, Time Out New York and New York Magazine online the week you’re going to be here.....they will have a listing of special events happening that weekend. There are almost always street fairs, parades and festivals going on somewhere in the city. Top of the Rock or 1 WTC is always fun or take the ferry out to Statue of Liberty and/or Ellis island. Head out to Coney Island if your adventurous.