GH,
You’re misunderstanding my point. I was responding to avreichamshlomo. I was just pointing out that the reason for waking someone up in this case is not in order to be motzi that person, but rather so that you yourself can be yotzei pirsumei nisa (if nobody sees it, there’s no pirsum).
Regardless, in the cases you brought, it would probably be appropriate the wake the person. Nothing to do with pirsumei nisa, just because it’s a mitzvah and they most likely don’t want to miss out.