The four ships operated by Disney Cruise Line will be joined by three more in 2021, 2022 and 2023. Unlike most ships of their size, they do not include casinos. Disney ships also feature ship's horns that play "When You Wish Upon a Star." Disney won approval to begin building a private destination in the Bahamas recently, its second after Castaway Cay. Based out of Port Canaveral, Fla., Disney Cruise Line packages cruises with its theme parks in nearby Orlando.