Do the coolest thing possible on a hot summer night in New York City: get out on the water. How you indulge in the watery goodness is up to you: opt for a breezy one-hour harbor tour on the double-decker water taxi boats, or spend an hour slumming around on a yacht or get completely soaked by a 30-minute thrill ride on the SHARK. Subject to availability and not valid on Speciality Cruise. Expires May 4, 2013. www.nywatertaxi.com