IT'S best to pre pay online its faster and easier
We always use our debit card when we arrive. Never had a problem.
Prepay on Jacksonville Port Authority website
You can prepay but not necessary you can pay with debit as you go in to park only takes about a minute.
Not sure if there is a prepaid option, but I know it cost us $100 for 5 days worth of parking, they are making quite the little fortune from this business
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