Since the Disney Visa holders didn't get an early booking window, the Disney Visa FD offer will drop at the same time as GP (at this moment, strong rumors suggest that will be tomorrow morning). I think what may have confused you is that Chase will send and email out for Disney Visa holders later in the day, just inviting you with a link you can click on. BUT the email normally reaches the Disney Visa holders 3-4+ hours after the actual promo has come out. By then, the rooms are slim pickings.
As a Disney Visa holder, when you click on the Special offer, across the top of the page on the package page of the Disney World website, it will say something like "Free dining offer for Disney Visa holders". You will click on that link. The room allocations are normally different than the room allocations for the general public. (i know last year, I could book rooms on the DV link that were not available on the GP link). If the room you are looking for isn't on the Disney Visa link, you are welcome to look at the general public link and book it there, if it is available (and still pay with your Disney Visa).
MAKE SURE you go to "My Profile" on your
MDE account, under "payment methods" and update it to show your Disney Visa card as your payment method. That will help you when you are checking out.
Good luck to everyone and
pixie dust that we get what we want!