Clearly states hear the roar of the big green thrill ride when it returns..I don't know what else that could mean. And If the roar wasn't returning why would they even go as far as to put it in a job description.
But heres the thing, things can change at any time. And with the rumors of Hulk opening with early entry and the extended time of operation, it makes me think that if your right about the roar, it will be much more quiet than it once was.