Princess Cruises will mark its 50th anniversary in 2015 with a series of onboard celebrations that include a Love Boat-themed deck party, blast from the past celebratory meals and special balloon drops. Passengers will also be given anniversary swag to take home with them.  Among the special events and free surprises will be a Love Boat Disco Deck Party with a 70’s theme and messages from the original TV show cast as well as a Love Boat sing-along and show trivia contest.  You can also enjoy special dishes in the dining room from the past five decades, special commemorative desserts and a Golden Balloon Drop where some balloons will have surprise giveaways hidden inside!  Princess’ 50th anniversary officially kicks off with the naming ceremony of Regal Princess on November 5 in Fort Lauderdale.