If you leave the castle on the west, you do not know exactly where you will end up or if the ground is soft enough to dig through.  

If you leave the castle on the east, the water may not be shallow enough for you to wade across.  Remember, you can not swim.  Also, moats have been known to contain alligators.  Do you exit west (down the laundry chute) or east (out the window on a rope ladder)?

Exit West          Exit East