Cruise giants Royal Caribbean, Carnival, Norwegian, and MSC each own ultra-luxury cruise lines . I've been on their brands' Silversea, Seabourn, Regent Seven Seas, and Explora's ships. Here's how they compare in amenities, food, cabins, and 2025 itineraries.

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Industry giants Royal Caribbean, Norwegian, Carnival, and MSC flaunt giant amusement park-like ships . But if you don't have kids — or prefer quieter vacations — the four companies also operate smaller ultra-luxury brands, replacing onboard rollercoasters with afternoon tea and Champagne. I've been on the ships of their four high-end counterparts: Silversea, Regent Seven Seas, Seabourn, and Explora.

Here's what you should know about each and how they compare, from dining to cabins. Related Video Inside the world's biggest cruise ship that just set sail Silversea's Silver Ray: A modern r.