When asked to describe my fantasy island vacation, my response always includes space. Not the moon and the stars kind, but the sort that comes with deserted beaches, acres of scrub brush, an abundance of birds and critters that chirp and rustle in the leaves, plus great food, service, and lodging. After all, a vacation is no place for self-denial. I found my dream getaway at Ambergris Cay, a resort in South Caicos, part of the Turks and Caicos island chain. Privacy is the new luxury, especially in a world still cautious about COVID-19. For me, the Bahamas and the Caribbean, jewels with sugar-soft beaches and turquoise waters, have always been healing places. But I wasn’t ready for crowded sands and restaurants shared with hundreds of other guests. Even if I were, my Shangri-La comes with a limited number of other explorers. I sought a natural environment with superb services. …