I guarantee you will not notice the GotG building when you are there looking with your eyes and not seeing it through the lens of a camera. This shot is from last Nov. and we were amazed how the "go away blue" truly made it disappear in person. They photo doesn't do it justice. Also, the building is huge, but the shots you see from across world showcase have a lens in the mix. As you can see in the pic (that was taken with an iphone with little zoom) we are pretty close, almost to the entrance, and it isn't dominating.
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That's an odd thing to "guarantee". It stuck out to me and some of my kids when driving past Epcot in late January, even more than SSE. I also notice the Soarin' building.