River View rooms and Preferred Locations are two completely different and unconnected categories.
Preferred buildings are simply the four Alligator Bayou lodges which are closest to the main facilities area and main bus stop (the buildings shown in blue on the map) and Disney charges a premium for the convenience of that location.
River View rooms are, well, any rooms with views overlooking the river (some are a little set back in the case of the mansion buidlings, but they all give a view of the river).
Where there is an overlap (such as a river-facing room in an otherwise Preferred building) the room is classified as River View.
For more discussion on all the room categories, see the Guest Rooms page on my site: www.portorleans.org/rooms.php.
So if you don't want Alligator Bayou, put in a request for a mansion building (Acadian House or Magnolia Terrace). The 'end of wing' riverfacing rooms in Magnolia Terrace are especially nice, and give very short walks to the main areas.
Andre
OHHHH now I get it. FINAllY!!! THank you. I was considering preferred as riverview - now I completely get it.thank you!