Regent Seven Seas

Regent markets itself as "the world's most inclusive luxury experience," and the fare structure genuinely backs it up: every shore excursion is included on every itinerary (Regent is the only luxury line to offer this), business-class flights are bundled, premium drinks are unlimited, gratuities are pre-paid, and Wi-Fi is unlimited.

The ships are all-suite, all-balcony, with the lowest passenger-to-space ratio in the industry. Seven Seas Splendor, launched in 2020, contains the famous Regent Suite — at $11,000+ per night the most expensive at-sea accommodation outside private yacht charter. Passengers skew 65+, very loyal, and many cruise 50+ days a year on the line.