We have stayed at BLT a couple of times, and neither time our villa was ready before 4:00. One time, it was after 5:00 before it was available. With a child that small, and only staying at Disney for 3 nights, I would plan to stay the whole time at one resort. I would rather ride the bus to and from Kidani Village, than have to pack up, move resorts, wait for the new room to be ready, and then unpack again at BLT. As you can probably tell, after multiple split stays, we aren't big fans of the whole process.