Still in the works is how you can use your Marriott Rewards points. A typical one-week cruise is pegged at $5,600 per person and each ship only holds 298 people, sometimes less as a number of single cabin suites can be combined into larger suites through movable walls. Prothero says it will likely end up you can use points for spa treatments, dining at Aqua, which is an additional charge or shore excursions, also not included. It’s unlikely you will earn points for cruising, but that’s not been finalized.