When we found out that DH's daughters were headed to WDW for a cheer competition, I started calling to get rate info immediately. I think I started calling in August or Sept for our 2/27 - 3/6 trip. I can't begin to guess the number of times I called to check
AAA rates, package rates, AP rates, rates for different hotels, info on WOS. By Oct. they had a list of EVERY call I made, and every inquiry I made. In the end we had decided to stay at the Dolphin with the AAA rate, but booked directly thru the Dolphin.
My guess is they knew I was headed to WDW for a cheering event, and hadn't made a ressie yet to stay at Disney. The postcard was valid for the dates I needed, so now we have 2 ressies, one for the Dolphin and one for POR. Still trying to decide.
The only "hitch" to my theory, is that the postcard came in my old last name, pre 2002, but under my current address, we moved in 5/03. The last time I was at Disney was 1999, but stayed at SOG with my parents. So not sure how they put the old last name with the new addy.