note there is only one entrance to the FP+ parade area (at least when we were there in May). It is near the path to Merida (the one Robo has marked as to Fantasyland). You enter the middle area (FP+) scan your bands and then pick a place to stand. We enjoyed standing so we could take photos with the castle in the background
Of note - you are in full sun there - if possible take an umbrella for shade before the parade.
We got there around 2:45 one day and a bit later on the next - got great places both times. Keep in mind the FP+ time says 2:45 - 3:05. Parade doesn't end up there until about 3:15.