Looking at my stuff for trip planning last year in October, it appears that the park is open until midnight Fri-Sun and 10am - 8pm during the week. DCA was 10am - 6 pm except on days that Mickey's Halloween Treat was running and those days it closed at 5pm.
As for Fantasmic, I think it is scheduled to run thru the fall and into the holiday season and then going dark when the river goes down for draining and some refurbishments in January?
As for ride closures in October, the only things I can find at this point are that the Orange Stinger will be down in DCA for it's makeover to the Silly Symphonies theme and in DL, both Casey Jr Circus Train and Storybook land Canal Boats will be closed. Hope that helps you with your trip plans!
I love my awesome crazy wonderful friends!!
"Do you remember in kindergarten, how you’d meet a kid,
then 10 seconds later you’d be playing like you were best friends?"
I think you can expect 10-8 (DL) and 10-6 (DCA) hours on the weekdays and 8-12 (DL) and 10-9 (DCA) on the weekends. Some DCA hours will be different because of Mickey's Trick or Treat Party @ night. You can probably expect F! on Friday, Saturday and Sunday night.
ap·pur·te·nant– adjective: appertaining or belonging; pertaining.