I don't mean to interrupt, but for those going outside - At night we put Loki's crate in the bedroom. VERY SOON we learned the difference between an "I want out" cry and an "I have to potty" cry. We took him outside in the middle of the night for probably the first 2 months. (Again bladder probs, but still) He finally learned to WAKE ME UP when he needed to go out, and so that's when he got to sleep in the bed. He mostly slept through the night. When he DID wake up, we went outside just to avoid an accident.
Sammy slept with us in the bed from the first night we got her. She sleeps through the night very well. Again, if she wakes up, we go outside. She usually licks my ear if she wakes up and I don't. Gross, but it works well because I scream EEEWW and get up.
My point is that they CAN sleep with you, but you MUST be willing to get up and take them outside if they wake up.