Last summer EMH in the evening only covered a few places in World Showcase, looking at the Disney web site seems to confirm what I expereinced last summer. Only American Adventure, Norway's Maelstrom and Mexico's Rio Del Tiempo are open in WS during EMH.
From the website:Mornings:
Living with the Land, Mission: SPACE®, Soarin', Spaceship Earth, Test Track
Evenings:
Includes attractions listed above and Honey, I Shrunk the Audience, Journey Into Imagination With Figment, Mexico-El Río del Tiempo, Norway-Maelstrom, The American Adventure
We were shooed out of China's CS about 10 minutes prior to Illuminations--about 8:50. Pretty much as Illuminations is shown the "countires" lock up for the night.