If you are just attending, there is no parking fee, if you are staying overnight, there is a fee
Hi! I stay at Beach and Yacht Club almost every time I come to Disney, which is about 6 to 7 times a year. The conference center at Yacht Club is fairly new, so I could be wrong, but I believe that all over night parking at any Disney resort would be about $25. Now, they could very well make accommodations for you, because you are apart of the conference. I do not believe there is parking anywhere else around the resort other than through the gates. But I would be prepared to pay, just to be safe!
Usually there is a fee to park but the do give you a time limit to park for free
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