If IASW is open at that time and
if they have the IASW seating area, that is a wonderful (though not the absolute best) place to see the fireworks from.
When we sat there Sept '07, we didn't see everything you can see from the castle area, but they had images flashing on IASW, you could
sit down during the fireworks (you actually had to, they enforced it), and we saw most everything. And then you're perfectly positioned for an IASW ride as soon as the fire marshall clears the ride.
So if it's back open and if they are set up for the fireworks viewing back there, you could try there.
The parade in
Disneyland...I liked watching from, and this sounds funny, in front of the bathrooms behind/to the side of Alice in Wonderland ride. If you're looking at Alice with Teacups behind you, go to the left and around the wall, and you will find bathrooms. Stake out your spot there, being sure you're not in a spot where your vision will be impaired by a tree in the way (newbie error I made), and it's a nice place. They don't allow seating on the other side, so the performers are only looking one way, towards that area, which is very nice!