Onsite guests, including DVC guests, park free at the theme parks. If you stay off site, or are a local day visitor, you must pay for parking at the theme parks, it is not a DVC perk. It is an ONSITE perk for all WDW guests, you will be issued a paper tag for your dashboard.
If you also happen to be an Annual Passholder, the pass will get you free theme park parking.
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