Looks like a recent submission puts them at 30.07 sign only, so concealed carry looks to be ok, but a commenter writes:
Of course you should always look for any signage first when you get there yourself.Be aware that if you're carrying concealed and you plan to do the zip line or ropes course, their policy is "empty your pockets." The staff will do what amounts to a very loose pat-down while helping you get your safety harness on. If they feel something they will ask you to remove it. While there's no actual prohibition on it, do you really want to lose your sidearm in a pool full of kids 50 feet below?