You do have to pay for parking but if you spend $20 or more at a store/restaurant you can have parking validated. As mentioned above comments you can always Window Shop
There is no enterence fee. However, parking can cost money if you do not purchase enough from a shop or restaurant to get it validated.
No
No it doesn't cost money to go to downtown Disney.
Free to visit But you will have to pay to park, eat or drink
Not to get in or window shop, but to do or get anything yes
It doesn't, unless you want to buy food, beverages or something like that.
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