Royal Caribbean has a buy 2, get 2 free offer on some select Empress of the Seas sailings. Book your 2016 Empress Sailing and the 3rd and 4th guest in your stateroom get their cruise fare free. Other charges, including, but not limited to, taxes, fees and port expenses, are additional and apply to all guests.

You need to book by October 11th for cruises departing  Nov. 1, 2016-Dec 15, 2016.

The offer provides for free cruise fare of third and fourth guests booked in the same stateroom as the first two offer qualifying guests in a triple or quad occupancy stateroom.

Here’s an example of a 4-day Western Caribbean Cruise from 11/3 to 11/7 leaving out of Miami. Final price is $742 for four people. That’s just $185 a person after taxes and fees.

On top of that, you can also get another $75 off with an Amex Offer that expires on October 14th. You will get a 1X $75 statement credit by using your enrolled Card to spend a minimum of $350+ in one or more transactions at royalcaribbean.com by 10/14/2016. I believe you’re able to split payments as well but you might have to call it in. The Amex offer is available via phone also so you should still get statement credit.