Vacations to Go offers a Royal Caribbean 4-Night Mexico Cruise for Two, bundled with $25 Onboard Credit, with prices starting from $756. Assuming you'll use the credit, that's the lowest price we could find for such a cruise in June by $247, although we saw it for $140 less (without the credit) a month ago. This roundtrip cruise aboard the Empress of the Seas departs on June 3 from Tampa, FL, with one stop in Cozumel, Mexico. Book this travel deal by May 1.