I don't think that's a problem. If you're on the dining plan, they like you to link them (you can call and do that pretty quickly), but if you're paying OOP, doesn't matter...that is, as long as you keep up with your ressie times and numbers! Also, you can connect your credit card to the KTTW, so when you dine at these places, you can still charge to the room and not have to carry your CC. Mine aren't linked, either, and I called about it and they said not to worry about it.