Thanks everyone! All my kids, with the exception of an almost 4 year old, are sleeping within 30 mins of putting them down, and none give me any problems whatsoever. The oldest one is allowed to get some toys of her choosing and she lays quietly on her bed. Sometimes she falls asleep, sometimes not, but she is to remain in there until I come and get her. Apparently this little one who is staying up until 10pm sometimes, didn't nap all weekend, and he was a wreck on Monday for me! I'm pretty sure he still needs a nap, he's just resisting bed time as my own children did at that age. My quiet time is VERY important to me, so I'm not willing to give it up to watch him until the others are up. He's not one to sit and watch TV quietly either. He also shares a room with another and I don't want to risk waking her up if I'm getting him early. I've had some issues already with these parents (they're the ones that showed up one Monday morning and he was in underwear, without any warning!). I'm just going to stick to my guns and let them know that nap/quiet time is mandatory here.