I don't need this to know what wakes me up during the night: my wife pushes the door and THEN turns the doorknob. A simple conversation was no good. My MIL said on her experience deep conversations would not help either. At least it didn't help for 15 years.
lol, my husband does the same thing… I told him I can’t see the door at night and sometimes walk into it, so we leave it open at night, solves the problem.
Motion activated (night) light - even a little battery powered one - and the same in the bathroom. Not enough light to stir you awake but enough to find your way without turning on lights or fumbling in the dark.
naa, that would re-introduce the problem of sound from door being pushed before turning the doorknob.