My husband and I did the Plaza Inn dining package on our last visit together in September 2018. We did it because my bad back prefers sitting in an actual chair at that point of a long day of walking.
I would not do this again, except for the pleasure of being seated at a table during the fireworks. The view was, to put it simply, quite awful; we would have done better to find our own spots along the regular of Fastpass viewing areas. The dining packages elsewhere (Blue Bayou or Hungry Bear) got much better views. The view was blocked by front-row tables, plus the crowds in between us and the water. I'm comparing this to the old Dessert Viewing in a balcony at New Orleans Square, where the view and seating was superb, and the World of Color Dessert Party, where everything is perfect plus champagne