Just got back 9/21-28. This was my first trip to the world so I have nothing to compare to. Initially I thought that the parks looked packed, then I realized there were no lines to anything. Guess I've been in Kansas too long! Mon- AK late for EMH(I know, I know!) Safari, kali, dinosaur, FOTLK and primevil whirl, all less than 5 min
Mon even-MGM fantasmic and RnR no waits, fantasmic did almost fill by show time. We arrived about 7:50 and sat in 2nd row, a little wet, but great view
Tues-MK- again appeared crowded, walked on everything
Wed-Epcot- MS, TT walk on, evening empty for illuminations
Thur- Blizzard Beach- longest line 5 min
Evening ate at 50's Prime time no ressies, waited 10 min for party of 7 (loved it!)
Fri- MK- a few more people, still did Fantasyland and toontown with no waits
Sat- MGM more crowded today. FP for RNR but didn't need it, rode 2 times in a row. TOT needed fast pass, by afternoon an 80 minute wait (remember one side down) Did millionaire, star tours without a wait
Sat night spectro absolutely packed! Waited for 10 pm show did sneak on splash about 9:20 with no wait
Hope this info helps!