As a cash guest being relocated from Caribbean Beach, you should know that several years ago
DVC Members, through official DVC publications, were specifically requested not to fax requests to our resorts, and that any such requests were basically ignored. If I were you, I would call or email Disney Reservations and make my requests that way.
As far as location, if your choice of buildings includes 11 to 14 and 23 to 16 you will be unlikely to get those requests. Those buildings are part of the Near Hospitality booking category for DVC Members. Of course, now, as the resorts are likely no where near capacity, your odds are much greater. Also know that I would not be at all surprised if OKW, being so large, is operating on a limited capacity until the COVID-19 virus is under full control and tourism picks up to near normal levels, which means some buildings/area of the resort may be sitting idle.
Know that since you are in a one bedroom unit, there was a design change during construction that may make a difference to you depending upon your traveling party. Building up to and including building 29 have one entrance to the bathroom, through the master bedroom. Building 30 and about have two bathroom entrances, through the master bedroom and through the laundry room. So if anyone is sleeping on the fold outs in the living room area, that would be something to consider. All buildings, except building 64 have adjacent parking areas. No balcony at OKW actually overlooks a parking area, all will have wooded, water or golf course views.