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Yes, mini golf is free but the golf simulator is $25. No bungy jumping, no charge for rock climbing or flowrider but you have to sign waiver form to allow them on. 52" height limit for flowrider. They don't stop 'big kids' from running through H2O Zone!
Would add make sure your insurance covers you for using Flow rider as it will be a pain in the wallet if your not covered?
Flow rider is free but can be lengthy queues or you can sign up for lessons at $60 to share with up to 6 people or $300 for individual lesson, H2O seemed to accommodate everyone who wanted to use it, dont forget the iceskating, thats free too.