The Plaza Inn dining package viewing is not good at best and horrible at worst. If they did cut down the hedges recently, I didn't notice it. We were partially blocked back during the Christmas viewing last year and I thought we had one of the better tables. The people in front of us stood up and blocked our view somewhat because they could not see (I don't blame them, but wish they would have stood behind us and the people behind us because that inconvenienced everyone else), I had to move my chair around closer to my husband to be able to see the higher fireworks between the two adults. One of the lights also didn't shut off so that was a hinderance to our viewing as well. I wish I would have taken pictures of when we were there, but the view of the castle is still blocked when we were seated outside for Minnie's breakfast.
I found some screengrabs from a couple recent walkthroughs of the park to show just how tall the hedge is, the man in the white in the center and guy in the green on the left side of the photo can kind of be used as a reference. The hedge is above their head.
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