I went a couple years ago and a couple hours before midnight I grabbed a seat on one of the planters near where the old Agent P's check-in used to be. This gave me relatively quick access to a bathroom up the path toward what is now the WDI Presents: Epcot Experience building. At the time I sat down, I was the only person there, though eventually other people joined me.
Just before midnight, I made my move toward the center of the main walking path toward the World Showcase, making sure to get past the monorail track, so it wasn't obstructing my view. It wasn't difficult at all, and I had a pretty good view of the fireworks, even if most of the regular Illuminations show that preceded them was difficult to see.