If You Like Roller Coasters,

and cruising,

2020 could be the year your dream comes true! the Carnival Cruise ship the Mardi Gras will boast an onboard roller coaster called The Bolt when it launches in 2020, the roller coaster contains 800 feet of track reaching speeds of nearly 40 mph. it will give riders 360-degree views of the water 187 feet above the ocean as it makes its way around the ship's red funnel,  

 and the neat bit is riders can control how fast they go, note to self, on a stormy day do not stand underneath the ride after the all you can eat buffet has finished!