I went there this last Sunday around 1:30 PM. I didn't have to wait too long to get in. Less than 10 minutes. It's better safe than sorry to go earlier though.
We got there 10 min early on opening weekend and we were the 5th car. Didn't wait too long. Also it has been promoted more so I would say get there 30 min to 1hr just to secure a good spot..
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