Remember Dreams Come True
The hub is where you want to be. It is worth the time to get there 60 minutes early to get a spot.
The most important thing is to have a clear view of the front of the castle. Note that there are trees in the hub which will obscure the castle from some spots.
If you have a clear view of the castle you will be fine. If you can also see the Matterhorn that is good. I have only seen Remember twice. The first time was my favorite spot. If the hub was a clock, and the castle was at 12:00, we were at about 7:30. (It is out in front of "Coke Corner"). There is a road around the hub with curbs, and we got a spot standing on the curb at the "7:30 location" because my two youngest were 9 and 10 and I wanted them to have the extra 4-6 inches of the curb to see over people who stand in the street. And that worked.
The second time I saw the fireworks we were at about the 9:00 position in the middle of the street, and we could not see the fireworks and effects behind the castle quite as well (because we were a little
too close to the castle, IMO) and I decided I liked the first spot better.
FWIW, the first time we saw the fireworks I went to the hub in the afternoon when it was not especially crowded with people and walked around. I looked for the curb, and the location of trees which blocked views of the castle and Matterhorn, and made a mental note of what spots were good ahead of time. Then when we came back that night I did not have to check sight-lines, etc., as I knew which ones were good. We just went to my first choice spot and sat down to claim our ground.
Be sure to account for the following: "HydroGuy's Fireworks Rule"
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Parade of Dreams
Note that when the parade is performed twice in one day, it goes from FantasyLand to Main Street in the afternoon, then from Main Street to FantasyLand in the evening. If you go in the summer, the evening parade is nice because you do not have to deal with the afternoon sun. The first time was saw POD we got a spot over towards the Matterhorn where there were cement chairs and that worked. You should be able to find a decent spot 30 minutes ahead of time.
Fantasmic
We like sitting better than standing, and thus always go down near the water. We go to the second show (when they have two) and can get a fine spot 30-45 minutes ahead of time.
Disney Electrical Parade
This parade is not
that popular and you can get a fine spot 20 minutes ahead of time. We saw it from Sunshine Plaza and that was perfectly fine.
Block Party Bash
There are two stops - one in the Sunshine Plaza and the second by Paradie Pier. I have only seen it once - and that from Sunshine Plaza - so I am no expert on location. If I were to see it in Sunshine Plaza again I would get a spot 20 minutes early on the outside edge of the road thru the Plaza somewhere in the center like out from Burrbank Ice Cream.