tl;dr – If you’ve ever been curious about Seabourn cruises, there’s a bit more of an incentive to book now.
American Express has a merchant offer available with Seabourn Cruises, a boutique luxury cruise line that offers sailings in the Americas, Europe, and Oceania.

Seabourn also offers ‘Expeditions’ trips to places like Antarctica, as well as longer itineraries including Transatlantic sailings and around-the-world journeys.

If you’ve been on the fence about booking a Seabourn cruise, Amex is offering 5X Membership Rewards (up to 50,000 MRs) on your purchase:

I’m not too much into cruises, but I’ve long heard good things about Seabourn’s product – everything from the service to the food.

If I were to go on a luxury cruise, I’d probably opt to book with an outlet like Seabourn as opposed to any of the luxury brands that have started cruise lines. Notably, Seabourn cruises are all-inclusive.

One way to look at it is that if you purchased an itinerary costing approximately $ 10,000, you’d end up with 50,000 Membership Rewards, which, when transferred to the right travel partner, could be enough for a lay-flat business class seat.
A nice little sweetener to go along with your luxury cruise.