We have never let the little cats into our bedroom at night, we always shut the doors and let them run around the rest of the house while we're sleeping. Not that we've never been woken up by crashing sounds coming from somewhere or found strange things in strange places in the morning. We just don't like kitties biting our toes or nuzzling our faces while we are sleeping. We do let some of the big cats in with us since they are not so full of energy anymore and will leave us alone at night. I think the big cats like the break from the constant motion of the little ones.
So, every morning, the little cats are waiting waiting waiting outside the bedroom door, and as soon as we open it, they run into the bedroom like it's the promised land and then look around like 'huh, not so exciting after all'. So, I go out and get their food, which is what they have been waiting waiting waiting for.
It's kind of like when wal-mart opens their doors for the after Thanksgiving sales and the customers squeeze and push through the doors to be the first one in-you just stand back and get out of the way!