For mid to high luxury cruising, Silversea and Seabourne are more expensive and deluxe alternatives.

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Two new international cruise lines, Carnival Australia and Silversea, started making port at the Pacific nation in October 2013 and 2014 respectively.

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Silversea's recently launched Prince Albert II, which goes to Antarctica and the South Seas, offers 24-hour butler service in its top cabins.

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