Carnival Cruise Line is bringing fast thrills and fun to their largest cruise ship ever, Mardi Gras. The ship will feature BOLT, a roller coaster with 800 foot track, 187 feet above the ocean and reaching speeds up to 40 miles per hour. Bolt: Ultimate Sea Coaster will be an included activity for guests boarding the Mardi Gras when she debuts from Port Canaveral, Florida in 2020.