Aug. 17 (UPI) -- Two American cruise passengers in their 70s drowned in separate incidents on Carnival Cruise Lines' private destination in the eastern Bahamas.

At Celebration Key on the south side of Grand Bahama, one person died in a lagoon and another at the beach on Friday, the cruise line told ABC News. The 65-acre private location, which initially cost $600 million to build, opened in July.

Grand Bahama, with 47,000 residents, is not on a private island, like Carnival's other locations for guests.

The island, which serves two Carnival ships at one time, also includes a water park, restaurants, swim-up bar, the world's tallest sandcastle and swing, and 1.5 miles of beach.

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