Years ago, Disney used to operate buses from the resorts to the TTC. The buses that leave from the resorts take you to the four major theme parks, water parks, and Downtown Disney.
To get from one resort to another, you have to (what I like to call) ricochet. To do this, you wait for a bus at AKL. A good bus to pick would be one headed to the water parks, Epcot, MGM, or the Magic Kingdom. Get off the bus at any one of these places and board the bus (or other transportation) to the Polynesian. Returning to AKL is simply the reverse. If you're flexible, you can usually ricochet from the first bus that shows up at the bus stop.
To do this in the morning, you have to make sure that at least one of these ricochet locations is open. Buses also run to Downtown Disney but from AKL, it's a longer drive. The other important thing to remember is that this takes a good deal of time and it might be worth your while to coordinate a meeting place instead of returning to AKL.
Presumably, you're going to check in at the Poly to get your room keys and UPH passes. I would suggest calling your family from a guest phone at the Poly and try to meet at AK.