If BB is open you will stop there. You may or may not stop at one of the other two monorail resorts on the way from AK to the GF. We stayed at the GF within the past two weeks and definitely did NOT stop at both the CR and the Poly. In know we didn't stop at the CR and I don't think we stopped at the Poly either, but I could be wrong about the latter.
I would use the AKL-AK-GF route only if you've just missed an MK bus and an AK bus arrives quickly.
The best route involves AKL-MK-GF, IMO. It's a long monorail ride around, so if there's a boat on the way in to the dock I would catch that because it goes directly to the GF from the MK. You have to pass the boat docks on the way to the monorail from the buses, so it's pretty easy to see what the status of the boats is. Also, make sure you catch the resort monorail; not the express monorail if you go that route.