We will be staying there in September and am wondering that myself. We stayed at POFQ in March and I know for a fact that POR was on the same bus but I can't remember if OKW was the other stop or not....hopefully someone else could clarify it more.
There is never any set order; ME does their best to accommodate the needs and there is no way to set the order this far in advance.
I go the weekend of Thanksgiving and it has never been the same way twice; and I have never waited more than 75 minutes from deboarding the plane to checking into my resort.