Priceline offers a 6-Night Mexico Cruise for 2 with Carnival Cruise Lines with prices starting at $618, as seen on Travelzoo. At $309 per person (excluding taxes and fees), it's the lowest current per-person price we could find for this cruise by $55. This roundtrip cruise departs January 13, 2013 from Long Beach, CA, with stops in Puerto Vallarta and Cabo San Lucas. Some restrictions may apply; fees, government taxes, and fuel supplements are additional. Deal ends February 10.