Princess Cruises launched the elegant Regal Princess in 2014. Sister ship to 2013’s Royal Princess, this 3,560-guest vessel feels classically Princess: slightly cushy, classic meets contemporary, built for a crowd that likes some activity but plenty of peace and quiet. Wows aren't of the crazy waterslide variety (you won't find them here), but the Piazza dazzles and the food and service are smooth. All outside cabins come with balconies, which brings the bonus of moderate pricing for these highly desired spaces.