Vacations to Go offers a Celebrity Cruises 5-Night Caribbean Cruise for Two bundled with a $50 onboard credit with prices starting at $498. That's the third-cheapest rate we've seen for a 5-night Caribbean cruise on Celebrity. Assuming you use the credit, it's also the lowest price we could find by $50. This roundtrip cruise departs from Fort Lauderdale, FL, on April 5 and includes stops in Key West, FL, and Cozumel, Mexico. Some restrictions may apply; fees, government taxes, and fuel supplements are additional. Book this travel deal by April 3.