I have a lot of sleepwalking stories. I'll start with the scariest.
We're on vacation in Moab, UT. We are staying in a campground, in a one room cabin. We don't spend much time there, so it is just big enough for our family of five. This is a few years ago, so the kids were probably 16 (daughter), 12 and 10 (boys). The boys are on bunk beds, youngest on top. Like I said, it was tiny, so suitcases are taking up pretty much the whole floor space between the beds. There's a mini fridge and small table in one corner. Door is standard hotel type lock, where it locks automatically to the outside whenever closed, but free to open from the inside.
So, one night we're all sleeping after a long day of hiking or doing whatever. In the middle of the night, I hear a knock on the door. Even though my parents are at the campground in an RV, I'm not really sure why someone would be knocking on our door that time of night. So I get out of bed, and proceed to trip on just about every suitcase on my way to the door. There's no peep hole, so I open the door to see who it is. It was just like in the cartoon, where you look straight ahead, see no one, are confused, then I pan down to see my 10 year old standing there. I'm instantly wide awake, and I start looking around the camp ground to see if anyone else is up and around, wondering what happened. I can see no one. I look back down at him and ask him what he's doing. He just pushing past me and tells me he's going to bed, and climbs up into his bunk. The way he's acting/talking, I could tell he was sleep walking, as he was barely making sense. My heart is now pounding, scared of what could have happened with him walking around the camp ground. I proceed to pile every suitcase in front of the door (there was no chain, or bar), to prevent him from doing it again.
He of course had no recollection of it at all the next morning, and my heart races a little to this day when I think about it and fear what could have happened that night.