I don't know how it works exactly except for at CRT. We were originally going with another family who had to cancel. So some ADRs were in her name, some in mine, some under her phone # and some under mine. Most I was able to change party size, etc with no issues. EXCEPT CRT. What a freaking mess. We were all going together. Resrvation was under my phone # but her name for some reason. My friend had to speak with a manager, and then fax in a form saying it was ok to switch it over into my name.
The system is kida screwy!!