These 10 mammoth cruise ships cater to all tastes - Seek adventure, fine dining, entertainment, or relaxation - for an unforgettable, redefined luxury vacation on the high seas. 

P&O IONA (P&O Cruises)  Passenger capacity 5200 Crew capacity - 1800 Iona has The 710 club for live music & entertainment

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COSTA TOSCANA (Costa Cruises)  Passenger capacity - 5224 Crew capacity - 1678 It offers a kids' club, Italian dining, and a spa for relaxation.

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COSTA SMERALDA (Costa Cruises)  Passenger capacity - 5224 Crew capacity - 1678 It is the world's first LNG cruise ship. It has a water park with thrilling slides 

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ARVIA (P&O Cruises)  Passenger capacity - 5200 Crew capacity - 1800 It is the first ship with retractable roof sky dome.

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MSC WORLD EUROPA (MSC Cruises)  Passenger capacity - 6762 Crew capacity - 2138 It features a VIP yacht club, an indoor amusement park & districts themed after various countries.

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ALLURE OF THE SEAS (Royal Caribbean)  Passenger capacity - 5400 Crew capacity -2384 It boasts numerous amenities for relaxation, shopping, and ultimate onboard enjoyment.

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OASIS OF THE SEAS (Royal Caribbean)  Passenger capacity - 5400 Crew capacity -2394 It offers an 82-foot zip line, a Central Park with 12,000+ live plants, an AquaTheater for high-diving

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HARMONY OF THE SEAS (Royal Caribbean)  Passenger capacity - 5400 Crew capacity -2394 It features a 10-storey slide, a ship-spanning zip line, and a Royal Promenade for shopping and dining. 

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SYMPHONY OF THE SEAS (Royal Caribbean)  Passenger capacity - 5518 Crew capacity -2100 This colossal cruise ship boasts the world's biggest laser tag arena and many other luxuries

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WONDER OF THE SEAS (Royal Caribbean)  Passenger capacity - 5734 Crew capacity -2300 It offers an AquaTheater, the sea's highest slide, & amenities for all ages.

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