The first one on everyone's list is the Carnival Mardi Gras roller coaster Bolt, the first roller coaster at sea - a genuine thrill ride you need to try at least once. With significantly more real estate than the other Fun Ships - the Carnival Mardi Gras size is 35 percent larger than the class of ships before it - the line has made sure that all the old favorites are onboard and bigger than ever, and also made room for features that are bound to impress. Carnival Mardi Gras's Deck Plans Feature Fun Themed Sections With its own roller coaster and a stunning Atrium, the ship packs a punch with lots of free dining and entertainment options. If you give a cruise ship the name Mardi Gras, you're setting expectations that everyone onboard is going to have a good time - and Carnival's newest ship delivers just that.