We have visited BWV three or four times a year and followed with a VB visit twice a year for the last three years. We usually arrive at BWV around noon. Our villa has been ready only twice, but we have only once waited past 2:30 pm to get into the room (and that time we got in right around 4 pm). We usually arrive at VB around 2 pm and have always gotten right into the room. With the current "room ready" assignment procedure, you should get into your room at the time you check in if a room meeting your (principal) request(s) is clean and ready to go without having to wait until 4 pm or later.
Ralph