I got one too for AKL @$129/night Apr - June. All I could do was laugh at the irony of my lousy luck. Any other year, I could do it. Not this year of course, we just bought a house and all extra $$ has to go to that for renovations and most of the work will be done Apr-Jun. Any way, I called CR to get more info on these elusive cards. No, I could not use them anytime outside the specified dates. Yes, selection for mailings is completely random and is chosen by an outside marketing firm hired by Disney. The agent would not be specific on where the names and addresses come from, except to say that if you have ever given WDW your name and address for any purpose, you could be eligible for a card.
Oh Well!! When all of the domestic issues are resolved, you can best bet a super-trip to WDW will be planned, card or no card.