The OKW studio will have two queen sized beds. In the bathroom, you will have the single sink, tub with shower and toilet (all in one room, so it is BIG). In the BCV studio, you will get one double sized sleeper sofa (might be a queen, but I think it is a double) and one queen sized bed. Sink is outside the room with the tub/shower and toilet. OKW is just a boatride away from DTD. BCV is just a boatride away from Epcot and Disney Studios. You can walk from both resorts to the respective parks as well if you like the walk. Pretty much no parking lot views at OKW (golf course and/or water views. You can get Epcot, courtyard or pool view at BCV.
Only three buildings at OKW have elevators - 62, 63 and 64. BCV has two elevators - one in the center and one at the end of the longer hallway.
OKW has the Community Hall where your kids can sign up for activities (arts and crafts, fishing, etc). No Community Hall at BCV. You can rent movies at both resorts for the DVD or VCR.
OKW has three neighborhood pools (quiet pools) and the larger main pool - no slide. BCV has one quiet pool and access to Stormalong Bay with two slides.
OKW has Olivia's, which serves very good food, plus Goodes Food to Go where you can pick up food. Plus they will deliver pizza to the resort. BCV has Beaches and Cream, Cape May and access to other restaurants at the YC and Boardwalk. You can get room service from BC and pizza delivery.
OKW bus only goes to OKW (now) with five stops. BCV bus goes to Swan, Dolphin, YC and BW with five stops.