There’s a reason why the Caribbean island of Mustique has long been a favorite of royals and celebrities alike—and mostly, it boils down to privacy. In addition to being Princess Margaret’s No. 1 vacation spot,

Prince William and Princess Kate are back in the U.K. after spending a luxurious break in Mustique last week—and there’s a very good reason why they love vacationing there. The Prince and Princess of Wales, who skipped the 2025 BAFTAs to head to the Caribbean with their three kids, can relax in absolute privacy thanks to the island’s tight rules.