TUI Cruises is a German cruise line company, a 50:50 joint venture between the German tourism company TUI AG and the American cruise line operator Royal Caribbean Group. It operates cruise ships primarily under the 'Mein Schiff' brand, offering premium cruise experiences tailored for German-speaking customers. The company also includes Hapag-Lloyd Cruises, specializing in luxury and expedition cruises, and focuses on quality, innovation, and sustainability in its diverse offerings.