We arrived on Monday, and of course that was the busiest day all week. That said, it didn't seem as crowded to us as last years trip from the 10th to the 17th. Everyday since Monday has been great, wait times lower than we've seen in years! Of course, there were days when FEA and mine train were up to an hour, but also saw times around 40 minutes as well. So many attractions were 10-15 min waits or less, including Soarin'. Safari at AK was literally walk on at 5:30, and EE and Kali were 5-10 minutes.
In years past I would read the boards and get frustrated because everyone was saying the parks weren't crowded, when we felt they definitely were. Figured maybe we were at the wrong parks at the wrong time, even though we followed the recommended crowd calendars. I guess we finally got lucky this year!