For MK you would stay to the right (not the far right as that is the bus lane, but the next lane to the left that is open). You would just tell them you are dropping someone off for the park and they will wave you through. You will not actually be going to the parking lot so they probably will not give you a pass. What you do is follow the signs to the Polynesian resort. Just after the Kennel but before the Polynesian you will see the guest drop off area for the transportation and ticket center where they can get the Monorail or the ferryboat over to MK. The other option is to go the same way and drive up to the Contemporary, you can drop them off at the Contemporary and they can walk over to MK, just tell the guard at the Contemporary that you are dropping them off (you can't park there but they will let you drop them off).