I too thought the valet key would break off, but after I realized it took about the same anount of pressure to turn the key as it does to push in the old mechanical button openers on an older car, it opened easy.
Also once the battery is dead and the door actuators don't work due to no power (ie doors are locked) even charging the battery will not return the them to the unlocked stage. Once the battery is charged with the keys locked inside, you must use the valet key or the fob (if it wasn't locked inside).
Check my friggin' 12 page battery thread from awhile back. :lol