It's first come first serve. Try to get to the park early as possible to rent at the desk. If they're all out, they will take your name and number to call you when one's available. Sometimes you can spend your whole day there without getting that call. My best advice is to seek out a mobility scooter rental place on line or just buy your own.
Go right to the right of the entrance there's a doorway and people at the door will help you
Just ask them at the front gate and they will help you with that
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