Luxury cruise line Oceania officially goes adults-only, joining a growing industry trend as travelers increasingly seek tranquil voyages over family activities.

A luxury cruise line is beginning to transition to adult-only cruises. Oceania Cruises announced that as of Jan. 7, it requires passengers to be older than 18 for all future voyages. Reservations that ...

We've rounded up the most romantic cruise lines—and the top itineraries to book.

The luxury brand conducted extensive research that showed travelers return specifically for the calm atmosphere, prompting the 18-and-over requirement starting this month.