Cruise Radio News Brief - December 16, 2018. Carnival Cruise Line has announced the first roller coaster at sea. Disney Cruise Line is hiking some prices. And a recently study shows that over 28 million people will cruise in 2018.  -- Thoughts or questions? doug@cruiseradio.net  Want daily cruise news? Subscribe to the Cruise Radio News podcast feed.  Get in-depth cruise news and industry insight at www.cruiseradio.net.