For travelers looking to escape the chaos of everyday life—and maybe avoid the sound of splashing kids in the pool—adults-only cruises offer a sophisticated, serene and fun alternative to traditional cruises. These voyages are specifically designed for guests aged 18 or 21 and up (depending on the cruise line), creating a grown-up atmosphere focused on relaxation, upscale experiences and a more refined sense of adventure. Whether you're traveling solo, as a couple or with a group of friends, adults-only cruises create a unique space where peace, luxury and social opportunities come together. Still find yourself asking, "What are adult-only cruises really like?" Keep reading to learn more. One of...