Take a walk on the repurposed old elevated rail line which has been turned into a park.
Take a walk across the famous Brooklyn Bridge. Take in the wonderful city skyline as you cross the bridge. On the Brooklyn side, stop and enjoy the beautiful parks under the bridge.
For those wishing to see the city from the waterways, jump aboard a circle line cruse. They offer various duration cruses.
For those not wanting a 3 hour tour... (old folks will get the reference) , hope aboard the free staten island ferry. It departs from the battery every half hour and the total journey takes a brisk 60 minutes. Get a view of the city as it disappears and get to see the real statue of liberty. (ask Amanda!!)
If you feel the need to get some cardio in after our party, feel free to rent a citi bike and explore the city. There are various rental options from the kiosk via credit card. Feel free to dock it in any of the drop off locations. Just watch out for the yellow ones they do not stop...