Six Flags Hurricane Harbor Concord is ready to make waves by celebrating the park’s 30^th anniversary with special festivities opening weekend May 17 & 18.  Along with being amongst the first to soak up the sun, guests visiting on May 17 will receive free commemorative sunglasses and guests visiting on May 18 will receive free commemorative rally towels.  Plus each day popular surf rock band, The Deadlies, will be providing live music as guests ride the waves at Breaker Beach wave pool or go on a relaxing float along the Kaanapali Kooler lazy river.