We were there this past Friday, the 27th. There were no crowds during the day to complain of. Test Track did not have a line out the door even at 11:00 AM! The World Showcase area was not crowded and the lines at even the most popular kiosks were pretty short. The weather for us was beautiful so that helped make the day so nice.
Returning that evening was a different story - we could hardly move it was so crowded. We finally ended up leaving after an hour because there were so many people and the lines to the kiosks were so long.
So, my advice is to plan for a full day where you leave early evening. Have fun!!
P.S. We had our dog at Epcot's kennel and when we went Saturday morning to walk him, the line to pay for parking was HUGE!! That evening, the lots were almost completely full.