This is exactly what happened to me an hour ago. I called the number ending in 407-934-7000 for beach club and they answered with "guest services." What threw me for a loop though is that she got all my info - name arrival date and requests and then transferred me to another "guest services" that took all the same info again.I can attest that this is a very good phone number for calling in room requests, if your check-in date is about 5-9 days away. You may not end up speaking with the back office at the resort (I believe they may answer with something like "guest services"), but the CM will ask for your name and check-in date and your room requests. When checking in at the Front Desk, I have always found those room requests have been notated in my reservation. There is hardly ever a wait for a CM to answer, when calling this phone number, unlike when calling the Disney reservations line to add room requests.
I think I may have called the wrong 'resort.' YC instead of BC? Should I call again but to 8000 or just assume all good...
Positive note I am up to post 1098