I just got back last night. On Friday I went to MGM and then to MK for Wishes & Spectro. Parks were not that crowded - no waits longer than 20 minutes. (And that was ToT and RnR standby lines). Saturday did Animal Kingdom and Studios again in evening for Fantasmic. AK was not crowded. Studios seemed a little busy. Sunday did Epcot - it was PACKED PACKED PACKED!!!! Haven't seen that many people there since the millenium. Obviously food & wine festival is bringing in a lot of people (it's so much fun!). Monday was also busy at Epcot (thought it would get better but it didn't) And studios was not busy on Monday at all.
Yesterday MK seemed EMPTY at about 1-3. Yesterday it also got really really hot and humid. The other days were perfection weather wise. Hope that helps.