The ship features 280 standard ocean view suites of 28 square meters including balconies. An additional 80 suites range from 35 to 100 square meters. While the Seven Seas Navigator was the line's first all-suite ship (80 per cent with private balconies), Mariner is its first all-balcony, all-suite vessel.

Feedback from passenger surveys helped guide the design of the new vessel's spacious public rooms and suites as well as the creation of an all-suite, all-balcony vessel.

In order to provide the highest levels of service for a maximum of 720 guests, the French-flagged ship carriesa crew of 440. She hasa French captain and French and European senior officers.

In addition to 24-hour room service, she offers four different dining venues including a main dining room accommodating her entire guest contingent in one seating. She is expected to operate worldwide itineraries.