this one debuted the slick Speedway Splash slide. Carnival WaterWorks ™, our onboard waterpark, doesn't just deliver the favorites. Visit the biggest Serenity area ever, featuring three decks, plenty of recliners. There's plenty to find atop this ship, where you can spend your days being kissed by the warm rays of the sun. Everything the sunlight touches on Carnival Sunshine has been doused with an extra dose of fun.