Well bummer!!
I too will be at WDW towards the end of the celebration (Dec 2002).
And yes Walt was born in December not October (when they are starting the celebration)
I have noticed with most of their celebrations at WDW they always start on Oct 1 and end December 31 so everyone can enjoy their celebration.
Boo Hoo Disneyland can't join in on the celebration, but if you want to get involved with the celebration they (disney) want you (the guest) to go to WDW and join in on the fun and excitement over there.