When you go to enter the gates, go to the second to last booth on the right. Let the CM know that they are dropping off or picking up. Then they will go straight (slightly right), not to the left for parking.. I think the first sign indicates the various resorts and you will likely see buses headed in the same direction. You will start to see directions for guest drop off. If you check Google Maps, you can see where you need to go.
If you want to bypass TTC, you could see about having them drop you off at Contemporary and then you could scoot/walk to MK from there.