And that sort of thing works at, say, 2am when a child in an unfamiliar place is looking for an unfamiliar bathroom? Or gets scared and is trying to find family members?
Considering I've known *adults* to end up in rooms they didn't intend to be in, when extremely tired and in a new place, I think it's pretty odd to think that one's disciplinary skills will translate to a nearly sleepwalking person.
OP, I feel for you! We had a traditional family bedroom for many years, and it was quite a transition when DS started sleeping in his own room. The thought of him getting up in the middle of the night and maybe going out the main door of our condo instead of coming into the big bedroom to find us was simply terrifying for a good while. On vacation he has started to sleep on the pullout bed at times without a problem, but I still get nervous if I think about it. I have NO clue how my mom survived with her in the back of our house and my brother and I in the front, right near the front door...no idea! Nervewracking.
I wish you luck!