Guests at the Dessert Party will be at a distance of 180-220 feet (2/3 of a football field) from the parade, with guests standing between them and the parade entries.
I've presented the areas (in blue) that are (somewhat) unobstructed by trees between the Noodle Station and the Hub area.
(BTW, this image is of the "old" Hub (before the re-design) but the sight-lines are still roughly the same.)