Eligible sailings are six nights or longer to the Bahamas and Caribbean, as well as round-trip sailings to the Mediterranean, including cruises on RCI's newest and biggest ship, Harmony of the Seas, and sister vessels Allure of the Seas and Oasis of the Seas.
This special offer, tied to the US federal tax filing deadline, is valid April 14-18 for travel May 15, 2016, through March 2016.
Details are here.