Starts over near Jumpin Jellyfish. Watch from there, as soon as it is done for you, walk briskly along, take a left hand turn at that Golden Dreams (?) theater, left around Grizzly, past Soarin' and out of the park. I dawdled along walking behind the parade, groovin' to the music I hadn't heard since I was a kiddo, and I still got out of the park before it was 3/4 of the way done behind me at the Sunshine Plaza.
You might not have the BEST viewing spot for the fireworks, but hey, even behind a tree is OK. (not recommended, but OK)