My dogs hardly move at night. They usually knock out on the bed, but will move if I want them to or if they think there is not enough space. They just go to the floor then. They can leave the room, because the bedroom door is open for the cats to come and go (I don't like it, b/c I have roommates, but the cats will rip at the carpet if not). Riley has left a few times to sleep by the front door, b/c the flooring is cooler in the summer. They don't get into anything at night, though. Riley had a couple of accidents while potty training, but that's it.
During the day, they are baby-gated into my bedroom. I'm sure Riley is reliable now, though he gets so stressed when I leave that I think the routine of baby-gating them is calming. Sadie is probably reliable, but I'm not ready to try yet. She went through a stressful event that made her a bit destructive at one point, though she's very well behaved in general and doesn't act like that now, so it worries me a bit. We'll see.