We always make the mad dash to Space Mountain..... going first thing in the morning, when your eyes are not adjusted to the dark is great!
What a way to start the day!
Catrin
If you have small children, do Dumbo first to get it out of the way. Then the rest of Fantasyland. Otherwise, I agree with others on riding the "big" rides first.
I agree...if you have kids, absolutely head for Dumbo first and while you are in line have someone (Husband or Wife) go to either PhilharMagic or Pooh and grab a fastpass!