Glide through the Caribbean for four nights on Disney Cruise Line's Magic -- named a Top Large Ship in the 2011 and 2012 Conde Nast Traveler readers' poll -- for $652 per adult (Oceanview cabin).

Best of all, up to two kids (17 and younger) sail for free, making the effective rate $326 per person for a family of four. This deal saves $528 per family of four off regular prices, and all reservations also receive a $50 onboard credit (per cabin).

The ship departs on April 16 and sails to Cozumel roundtrip from Galveston, Texas, located 50 miles south of Houston. Balcony and oceanview cabins are also discounted.

Ship highlights include: a state-of-the-art, jumbo poolside screen for Disney movie viewing; the only fireworks display at sea; character encounters; and adults-only spaces, including a quiet pool and an elegant restaurant.

This is part of a larger Disney cruise sale that includes four- to eight-night sailings (from Miami or Galveston).

Note: Taxes are an additional $39.99 per person.

Book by January 11, 2013. Top 20 deal – sells out quickly.