Cruising Comeback Scenic Rivers and Private Islands As travelers set their sights on setting sail once again, cruise lines are taking steps to make sure that every voyage is as safe and enjoyable as possible. Where and how you cruise can also make a difference. Two types of cruises are sure to be trending as ships ply the world's waters again-and, luckily for you, they're among the most scenic and thrilling. Discover how river cruises and private islands are helping cruising make a comeback. S.S. MARIA THERESA PHOTO COURTESY OF UNIWORLD