Go and have a beer and a meal at Harry's afterwards (only about 10 mins walk from the Helicopter Quays) with all the Wall St Big Hitters:
http://www.harrysnyc.com/
do a cruise round Manhattan. Go to the museums. Go shopping. There are literally hundreds of things to do without even leaving Manhattan. (If you do want to leave try the ferry to Staten Island and back, great views of the Statue of Liberty and the southern tip of Manhattan; it's free but avoid rush hours.) Cheap same-day theatre tickets from a booth in Times Sq or another less crowded at South Street Seaport
I`m not sure I`d want to do the cruise around Manhatten in the middle of November. Could be bloody freezing. Central Park is always nice to hang out on a fine day. Go up and see the Dakota building (Where John Lennon died)