Yes when you pull up to the booth to pay just say your dropping off and they guide you where to go. It will be where buses, taxis and Uber's drop off
Yes you can you need to Google the drop off spots for Disney though but yes you can
Yes like Liz said you go to where taxis and buses go and you can drop people off without paying for parking
Sorry, never did this for I always taken the Disney express that transfer you from your hotel inside disney to the parks
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