Vacations to Go offers a Royal Caribbean 4-Night Mexico Cruise for Two bundled with a $75 onboard credit with prices starting at $538, as provided by Dunhill Travel. (If prompted, sign up for the free newsletter to see this deal.) That's $84 under our mention from two weeks ago and the second-lowest rate we've seen for any 4-night Royal Caribbean cruise to Mexico this year. Assuming you use the credit, it's also the lowest current rate we could find for this cruise by $3. This roundtrip cruise on the Vision of the Seas ship departs from Fort Lauderdale, FL, on August 14 with one stop in Cozumel, Mexico. This cruise is on Royal Caribbean's Vision of the Seas ship. This travel deal ends June 17.