We could see it a little. I went with the idea that we could watch illuminations from our window (I had been told there was a view). We were seated at a window. When the show was starting, I could see out of it but DH could not, even though we were at a small table. Some of the view was blocked by trees and it had been raining so there was bit of condensation. I had to sort of lean to get a good angle. After a while I just gave up as I could see the show, but not really "watch" if that makes sense.
If you get a table right at the window that has an unobstructed view, you can probably see most of the show. If you are not near a window, I don't know if you'd be able to see at all. If you really want to watch Illuminations though, I'd plan to be done dinner before it starts. Have fun! JJ