While you may feel there is no need to fax, I can tell you from experience that it works. In all my visitis to WDW, I only went one time without faxing a request and that is the only time it was not honored. (Yes, I do realize that no request is guaranteed and it is only a request.

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Quite honestly, CROs documentation within the reservation is a far cry from accurate most of the time. Each time I have been within that final month of my trip and I call to verify all reservations, I have found there are problems with my requests, many times things listed that I never asked for and honestly don't exist.
(POFQ, 4th floor, Lobby View?
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When I fax a very nice letter, my requests have always been honored. (not a long list, just one or two)
I do understand where you are coming from, however I don't think you should urge guests not to send fax requests. That is Disney's job if that is their choice.