Personally, I wouldn't want to miss any of Disney's Parades. I think the Parades and Shows is what makes Disney so special, along with the rides. I love both Spectro Magic and the Disney Dreams Parade at MK. My daughter loved the afternoon parade so much, we say it twice while we were there. As for the hot sun, I agree it can get hot. I think the best place to see the parades (both) is near Frontierland. You'll have a better chance of getting a spot near there, also there is some shade. Another suggestion is to wait near where the path are. They don't allow people to stand there to wait for the parade, however, they close the ropes when it starts. This will give you an opportunity to maybe wait in the shade and have a spot to see the parade.