I know, I love getting into Epcot before World Showcase has even opened! Don't fret too much - October is a lot closer than December, and the flight is still there even in December...just not on our date (December 8th). It's there the 7th and the 9th...our bad luck making our long weekend a Thursday to Monday affair I guess!
Nala, that's too bad - I wonder if they would've done more for you if it was a longer difference. Also, as I noted, our flight was actually canceled as opposed to moved, so that may have played a role in their agreeing to change airports for us.