DD will sleep through most noise (having an older brother will do that for you), but doors slamming wake her everytime. Our Toilet is next to her room and on Christmas Day I stuck a sticky note on the toilet day that simply said "Please close this door softly while A is sleeping". FIL just let is slam while I was in her room resettling her, then MIL commented that she didn't sleep for long - Grrrrr

I don't expect total silence either, but a bit of courtesy not to deliberately be loud wouldn't go astray.....