I just tried Norwegian Cruise Line’s new hybrid waterslide-roller coaster — and it’s both free and ridiculously fun

I almost chickened out of trying Norwegian Aqua’s new Slidecoaster. I’m so glad I didn’t. Everyone on my five-night preview sailing of Norwegian Cruise Line’s ship has been eager to try this first-in-industry attraction. After all, the two giant multicolor tubes that encircle Norwegian Aqua’s top decks are the dominant feature of the ship. There’s …