Hi Christina!
Oh, Fantasmic is just...amazing. It's a huge show filled with fireworks, movies displayed on waterfalls, characters, music and more. It is mesmerizing. I *do* think it's worth the wait because it is that good. In fact, I think if you don't get there early, it's kinda not worth watching because the Standing Room Only seats just don't do the show justice.
It's set up in a a big amphitheater with metal benches. So, it's loud and open. It's not like you are sitting in a theater and have to be quiet. It just kinda depends if your kids can handle just hanging out for awhile. Of course, there is food and the vendors with flashing lights and all that crazy stuff!
{I say yes!! Do it!}
As far as other to-dos? There are too many to list! I say hit every parade because it's a nice change in your day and you see so many characters. Then, why don't you check out the
Traveling With Little Ones page. There's a link to a preschool park map and other info that might help in planning your trip!
Have fun!