Let me try to clear up a few things:
The resorts get the reservation info about 4 or 5 days in advance. They don’t have it any earlier than that, but they very very certainly get it before the day of check-in.
There is no way to call any WDW resort directly. Yes, Disney publishes a “direct” telephone number for each resort, but this is an illusion, pure Disney magic. When you call a resort number, your call goes to a call center with the very boring name “Main Switchboard” (Disney’s actual name for it). The cast member answering the phone can see on their computer screen which resort you are attempting to call, and will answer the phone as if they are at that resort, when in fact the person answering the call may or may not be in Florida. This cast member will usually answer your question, which often has disastrous results because they ogten have no first-hand knowledge of that resort. Many CMs just wing it a lot of the time, or so it seems as evidenced by the mountain of bad information people get. The CM has the option of putting you on hold, while he/she calls the resort and asks a CM there if he/she would like to take the call. If the resort refuses the call, the CM gets back on the phone and, as one CM once wrote, “tap dances their way through an answer” that may or may not be correct.
The CMs at Main Switchboard are trained to be gate-keepers. They are trained to NOT let a call go through to the resort unless absolutely necessary, and a reservation request is 100% NOT a necessary reason to transfer your call to the resort; the Main Switchboard CM will have it noted on your reservation.
The very very best way to make a request is to have the request noted on your reservation. If you reserved directly through Disney, call 407-W-DISNEY and ask the CM to note it on your reservation, and have him/her read it back to you so you know it was done properly. If you booked through a travel agent, call your TA and have him/her contact Disney to have it noted on your reservation.