the walk from the edge of the poly property to the edge of the grand property is less than five minutes, you may need to build in a couple of more minutes if you are on the furthest ends of each property from each other. The walk from poly to MK is a little over a mile so depending on your walking speed is probably 20-30 minutes. BLT is another 5 minutes past MK. You do have to go through security checkpoints to walk in front of MK but you dont need to be ticketed to the park.