I would just go. Be prepared for the worse, which most likely will never happen. Hope for the best.
There was a guests on the resorts board that was at AB the same week we were. They didn't have any bus problems.
DH and I are picky or demanding. I don't know if was just luck of the draw or what.
I have posted this before elsewhere, but will repeat myself.
We normally go to WDW in January. And it is dead. So we knew we were going to experience much heavier crowds, etc. No problem.
ASMo had the best bus service I could ever even imagine. The lines were long. But they were orderly. CM's would pull handicapped guests out of the lines going way back and get them on the busses first. And they had one bus come in after another to take the guests.
It was fabulous!
Even at the parks in May, POR was consistently the longest line. And we park hop and come and go at various times. So it's not like we were *expecting* to get on a bus right away right after the park closed.
Any wait under ten minutes I am happy with.
With the POR busses I will just tell you what I told others: Figure how long you think it should take you to get where you are going (in case you have PS's or whatever). Double that time and pad it some more. You should be fine.
This May trip was one time if taxis had been available at the resort out front, I would have taken one.
I recall once we waited a long time. I was very tempted to go back inside and order a taxi. But I thought (hoped) by the time I did that and one arrived, I would be on a bus.
We left early morning June 1. FQ opened the day before. We were really glad to be out of there because we were uncertain how that would effect the already poor POR bus service.
Other times I have stayed at WDW resorts, I always got a questionnaire. This was one time I didn't. So I wrote my letter and glad I did. I didn't expect or want compensation. I just wanted them to be aware of issues that can easily be fixed.
The bus stop CM's were very nice. Just very ineffective, from our personal experience. There wasn't a morning that went by that I did not witness other guests chewing on them for lack of busses. I take that back. I think it was Memorial Day morning, the two CM's were monitoring the busses from a CAR in the PARKING LOT!
Just go and enjoy and hope they fixed their bus issues. We were there last May. They have had some time to work on it. If it's bad, you just do what we plan on -- don't return to POR. I let them know the good, bad and the ugly. After that I speak with my pocketbook.
We did see repeatedly guests who waited the longest most likely did not get on the bus. We saw repeatedly newly arrived guests just walk on. It was really just luck of the draw where the bus would stop, where you happened to be, if you were buried in the back of the wall to wall guests, and how determined you were to be on that bus.
Best of luck and enjoy your trip!