For AK, we had heard about sitting near Flights of Wonder, so we headed over there. Well we found a bench between Flights of Wonder and the restrooms and were able to watch the parade sitting on the bench and had no one blocking our view. Probably the best viewing we had for any parade/fireworks. Just keep in mind, that even arriving 10 minutes early, we had a much longer wait as the parade takes time just to get to that point. I didnt pay attention to my watch, but I would say that it didnt arrive until at least 4:15.
For Spectro and Share a Dream parades, I second the Frontierland spot. We had a spot right up against the ropes by sitting on the edge of the porch area next to Country Bear Jamboree. That was a great spot too, but you will have to arrive early to get these spots.
For Illuminations, we wanted to sit at International Gateway, but it was closed off for a wedding party. So we headed over to Italy and sat in the landing area next to the gondola docks. We didnt get the best spot here as we werent quite early enough
if you arrive early enough, you can get the bench right on the rails and have a perfect spot. Our view was still spectacular.
I dont want to advise you on when to get those spots based on our experience because you will be there at a much busier time. I would think that for AK, you can get there 20 minutes early to still get those spots, but for MK and Epcot, at a minimum, 45 minutes early
maybe someone else can give better estimates.
Farawayfan...If you are worried about getting into the Monorail resorts to watch, the audio is also fed into the boat landing at TTC. We watched Hallowishes from there and thought it was a good spot. It was definitely quiet...there was about a dozen of us there just to watch the fireworks...and if you are parked at TTC, it gives you a quick exit before the MK crowds get there.