Princess Cruises launched the beautiful, 3,560-passenger Regal Princess in 2014. With sister ship Royal Princess, it's the fleet's largest but still 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 water slide variety (you won't find them here), but the food and service are smooth. All outside cabins come with balconies, which brings the bonus of moderate pricing for these desired spaces.