For those of you who have been before, will World Showcase be a zoo on nights with popular narrators or will we still be able to tour pretty much as usual? Our first day at Epcot is Wednesday, November 30, and NPH is the narrator that night. I know he's really popular and I've heard a line forms for several hours for people who wait in standby. I just want to have an idea of what to expect, thanks!
From about 3 pm until Illuminations, expect the space between Italy and Japan to resemble Main Street USA when people wait for MSEP. It's not unmanageable, and they do a pretty good job keeping the lines off to the side. During the actual performance times, it will turn into something comparable a fireworks crowd, as people slow down to try to watch and CMs try to keep the walkway moving.
The rest of World Showcase is rarely affected at all, so at most maybe try to have your American Adventure area touring completed in the early afternoon if you're looking to avoid the crowd completely.