If you get there before the ride operates, do it first. It won't spoil anything. If anything, it got me pumped for the rest of the day. All the other rides were just as exciting/boring as they were before MF was even a twinkle in CP's eye :). If you get there after it starts operating, forget it and come back, the line will be too long til later in the day.
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aIrtIme'S oVeRrAtEd...