You can vacation on a private Caribbean island for as cheap as $80 a day, so long as you go by cruise. Cruise lines like Royal Caribbean, Norwegian, and Carnival have islands exclusive to guests.

25 Best All-Inclusive Resorts in the United States 13 Best Affordable All-Inclusive Resorts for a Dreamy Vacation That Won ... Escape 12 Best All-Inclusive Adult-Only Cruises for a Vacation ...

Few vacation experiences scream ultimate luxury quite like a stay on a private island ... You can rent out the entire island, ...

If you're looking for an adults-only all-inclusive resort for a child-free vacation ... luxurious over-the-water villas and a private Balinese-inspired island for a unique escape.

Over the next three years, he spent a reported $10 million turning the island into a luxury vacation destination ... up to 48 adults. The entrepreneur also has a private home on the island ...

For an ultra-exclusive stay, opt for the Private Island Diamond ... designated adults-only Sandos Cancun offers guests the chance to relax in the beautiful Riviera Maya on a vacation with friends ...