The op is asking about bussing so I gave him/her my opinion on that. It's their choice if they want to bus or drive.
Of course it is their choice, I just don't see how it adds up to a better choice from a convenience standpoint. In our experience, the difference isn't even close.
The DRIVE alone- from MK to AK takes 18minutes, which doesn't include any wait time for an AK bus.
If I'm park hopping I park the car very early at my last park which usually means it'll be closer to the entrance/exit. Bussing might take longer but it's worry free and you don't have the added walking to and from the car multiple times, plus the bus drops you off closer to park entrance
I'm not trying to pick on you, really, I'm just trying to understand. I suspect OP is doing this for the same reason you are. I
I think the advantages of which you speak don't really exist.
It seems like maybe you should get a better parking spot if you arrive early, but in practice that hasn't been our experience. We're able to park rather close to all the parks when we arrive later in the day.
If you look at the satellite image of AK, the bus stops are further than the tram stop. But we don't usually take the tram, because the walk to our car is very short. Again, look at the satellite image, and you'll see the bus stops and most of the parking spaces (at least the ones that get used), are almost equal distance to the front gate.
At MK, the monorail platform is closer than the bus stops. The walk from MK gate to the monorail+TTC platform to the tram stop roughly equal the walk from MK gate to the bus stop. From there you an take the tram, but we usually walk. From the tram area to where we park is usually less than 1,000 feet, or roughly equal to Main Street (MK gate to the center of the hub). This is about half the distance of the MK gate to CR.
I have used the WDW buses many times. I wouldn't call the experience stress-free, but that's my take.
By all means, take the bus if you enjoy it. I just don't see where it adds any value.