Op--In your post you asked if Disney has a way of "keeping track" of who belonged at the hotel so you wouldn't "get kicked out." Maybe it was just a poor choice of words, but it sounds like you knew the answer to your question before you asked it. Which is why, I'm thinking, some of the replies sounded a bit harsh. Mine included.
As a heads up the following subjects will cause the same reaction:
Posting about having more people in your room that Disney allows.
Deciding for yourself that your child is tall enough for a ride, and trying to "help" them meet the height requirement.
Lying about your child's age in order to buy them a cheaper park pass, or in order for them to eat cheaper.
Part of the rules of the Disboards is NOT posting any way to get around any of Disney's rules. And as you have found out, if people think that is what you are asking, the comments you get will not be nice.