First, I agree with everyone else. I was even at Epcot on Memorial Day last year, and although there were long lines to get in, once in, it didn't seem crowded at all. For the absolute best day, it's hard to say, what with the EMH changes going on. However, my guess would be that Wednesday would be best for Epcot, and here's why.1.It's late night EMH at MK, drawing crowds there, away from Epcot. and 2. Late night EMH for Epcot is Thursday, and traditionally, a park is less crowded the day before extended hours, because people are more likely to wait one more day and go on extended hours day. But remember, this is just what I figure will happen-no one knows for sure yet.