If you are staying on property, parking will be free. Now where you park and how long it will take to walk depends on when you get to the park. Rope drop, uou will be close to the front and should not take any more than 5-10 minutes except at Magic, where it will be 5-10 minutes to the TTC and then travel time on the ferry or monorail to the park. That's why most of us recommend the bus to MK. If you are early to DAK, you may have to wait at the toll booth until just before park opening. That has always been my experience but I have not driven to DAK in the last couple of years that early (as a guest)