hurricane harbor: I want to go there for my birthday (may 29) and the opening day is may 28. its on the weekend and i would invite 9-12 friends... would it be reeally crowded or no? because i went to raging waters on opening day for my friends birthday and we were almost like the only people there!! is it the same at hurricane harbor, and which day should i go, may 28 or 29?? thanks!!|||The ones at Six Flags Magic Mountain and Great Adventure both open on May 28th. But the one at Six Flags Over Texas opens May 14th. Im sorry to tell you all of them but you never said which one you were going to Expect long lines though, as you'll be going on opening day, or just 2 weeks later. So they're likely to be packed. Have fun though :D|||There IS more than one Hurricane Harbor. Lots of the different Six Flags park have a Hurricane Harbor either inside or adjacent. SFHH in LA, next magic mountain will most likely be crowded, especially if the weather is good. It was last year. Lots of locals have the double park season pass and tourists that are visiting want a water park to go to.