Without dinner cruises to keep them occupied, cruise ships would go wild, consuming all the yacht-christening champagne and attempting to ramp over Florida. Keep schooners civilized with today's Groupon for cruises from Entertainment Cruises. All cruises board at 6:30 p.m., depart at 7 p.m., and return at 10 p.m. Choose between the following options:

• For $50, you get a three-hour dinner cruise on either the Spirit of New York or the Spirit of New Jersey, Sunday–Thursday (a $102.28 value, including tax and fees).
• For $59, you get a three-hour dinner cruise on either the Spirit of New York or the Spirit of New Jersey, Friday–Saturday (up to a $116.91 value, including tax and fees).
  
  

Entertainment Cruises invites guests atop the Spirit of New York and Spirit of New Jersey to bask in dining, dancing, and daydreaming amid the glittering waters of New York Harbor. Once aboard, guests dine from a plentiful buffet peppered with roasted rosemary beef, wild Atlantic salmon, and hearty pasta dishes as they chat with other passengers at a round candlelit table. Meanwhile, a singing wait-staff croons popular songs to keep meals mellifluously seasoned and to drown out the atonal whistling of ashy-cheeked stowaways. Once diners have had their fill, a top-40 DJ stands at the ready to pump the dance floor with two hours of hip-swiveling tunes while the watercraft explores the city's sights.

Cruise-goers emerge onto the outdoor patio to drink in shimmering views of the Empire State Building, the World Trade Center site, and the Statue of Liberty, which majestically throws paper airplanes at Ellis Island when its back is turned. Passengers return to shore at 10 p.m. with eyes, ears, and appetites awestruck and satisfied.