Kit is pretty good. He knows that when we shut the light off, his humans are down for the count, haha. We usually leave the bedroom door open a crack so he can come and go as he pleases, which seems to work, as far as him letting us sleep. Occasionally, he'll get a hold of one of his noisy bell-ball toys and start batting it around the (wood-floored!) bedroom or hallway, which will wake us up. He does eventually come in to sleep with us, usually either by our feet, or cuddled up to my fiancee, who he adores, haha.
After reading some of the other posts in this thread, I realize how blessed I am!