Also Aquatica around 2009-2010.
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The problem with water parks: they have a random de facto closing time most Summer afternoons. Thunder within 5 miles, the park suddenly shuts down for all intents and purposes, but can't really schedule extra boats (or buses) around that.
I don't care how next generation this park is, if parking is problematic, locals will stay away. And it will need locals for at least its first half decade to stay afloat.