You don’t have to retreat to the Caribbean to enjoy the ease of an all-inclusive resort -- in fact, there are dozens across the U.S. that cater to all types of vacationers. Here, we’re taking a look at adult-only properties for a more mature, but no less fun respite. Whether you’re interested in a lakeside getaway or a wellness retreat in the desert, we’ve got you covered. Note that all-inclusive packages in the U.S. rarely include alcohol, so you won't quite have the Caribbean experience, but many properties still serve it.