I feel better knowing that you can park near the building ...
Of course, "near" is sometimes in the eye of the beholder (or in this case, the luggage hauler

). Depending on which AB building you are in, you may be able to park fairly close your building, or you may have to follow a lovely winding trail between other buildings to get to yours. Look at the following map:
Map of Port Orleans
You will notice that Sassagoula Circle is the road that circumnavigates the outside of POR. The parking areas are all off of Sassagoula Circle, with the buildings themselves further inside the circle. (The Alligator Bayou section is buildings 14 though 39.) So some buildings, like 15, 16, 17, and 24, are very close to parking, while others, like 26 and 27, are a bit of a hike.
Any tips on what building in POR - AB I could request? Would love to see the river but being near the bus depots are a plus as well.
I think that waterview rooms have a higher price, so if you booked a standard view, you probably will not have a view of the river unless you just happen to get a free upgrade (and I have no idea how likely that is). I think that buildings 14, 15, 16, & 18 are popular requests as they are near the main building (food court, store, etc), as well as the main bus stop.
Over on the Magnolia Bend side, Magnolia Terrace (building 85) is a good choice as it is near the main pool, very near the east bus depot, and is relatively close to the main building.
Of course, getting requested buildings is very hit or miss. You may have better luck by sticking to "near the main building", "close to a bus depot", etc. Also, there may be more choices available if you get there early in the day (and are willing to wait for a preferred room), as opposed to checking in late.
Good luck, and enjoy your stay at POR!
