Do you have a specific deluxe in mind? or are you asking in general?
Our preferred deluxe is the AKL (with a visit or two to WL)
and both of those have the vanity areas OUTSIDE the bathroom. There is a main wall between the sleeping area and vanity area, but it is 'open' facing the entry area.
See here for a floorplan of a 'typical' room at the GF
http://www.wdwinfo.com/wdwinfo/resorts/grandflrooms.htm
see here for a floorplan of a room at the WL (AKL is almost identical)
http://www.wdwinfo.com/wdwinfo/resorts/wildlodgerooms.htm
see here for an actual room photo at the beach club (same basic floor plan as the GF, AKL and WL, but an actual photo, not a floorplan.
the vanity area is behind the wall with the photo, it is open, but the light from the vanity area would not be shining directly into the sleeping areas
http://www.wdwinfo.com/wdwinfo/resorts/bc-rooms.htm
here is a floorplan for the contemporary (which is vastly different from the above mentioned places
http://www.wdwinfo.com/wdwinfo/Resorts/contemprooms.htm
Here is the floorplan for the poly (more similar to the CR)
http://www.wdwinfo.com/wdwinfo/resorts/polyrooms.htm
I couldn't find a floorplan for BW, but from the descriptions, it sounds exactly l like the floorplan from the beach club.
I don't have a picture to post, but when we stayed at Coronado Springs, the vanity area, while being outside the bathroom area, had sliding wooden doors, instead of just a curtain, which allowed for more privacy, and blocked the vanity lighting so someone getting up early could get ready without worrying about waking anyone.