Serenity (adult retreat, upper level) has 2 whirlpools (large-size outdoor hot tubs) and an exclusive sundeck furnished with hammocks, padded wicker chaise lounges and premium clamshell chairs (with folding hoods). The adult deck is complimentary (free entry) and accessible at any time, but the whirlpools and the Serenity Bar (on lower level) are available between 8 am – 10 pm only. Hours may vary depending on cruise itinerary, portdays/seadays, weather.
On Sky Deck is also the AquaTunnel and Twister waterslides entrances. The slides are open between 10 am – 5 pm and end in the Stressless Pool (on Deck 10). Carnival Freedom's WaterWorks features a 62-m / 203-ft long AquaTunnel (waterslide), Carnival’s signature 65-m / 212-ft long Twister Waterslide, a 75-gallon / 285-liter PowerDrencher (tipping bucket) and the kids-only SplashZone.