NEW MAT RACING WATER SLIDE ATTRACTION, “GRAND CARNIVALE” INTERNATIONAL FESTIVAL COMING TO CAROWINDS IN 2020 Charlotte, NC, Aug. 15, 2019 (GLOBE NEWSWIRE) -- World-class water slide racing is coming to Carowinds in 2020 when Boogie Board Racer, the longest mat racing slide in the Southeast, debuts next...