You need to wait in a long line if you just show up. Up to two hours. Otherwise no difference.
No difference i went at my assigned time and it was perfect....
Reserve tickets gets you in a faster line. Even if it's for a later time they might let you in earlier if it's not busy at that particular moment, but depends on the person and ask nicely.
Reserve tickets its best. But i only waited 10mins before going in without tickets. The line looks long but they try to keep it moving pretty quick
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