We returned on Wednesday. It is very crowded. Waits for attractions like Small World/Pirates of the Caribbean/Jungle Cruise without Fast Pass were 55 minutes or so. At Epcot the waits didn’t seem as long - for Spaceship Earth it was about 20 minutes without a Fast Pass; I didn’t check the wait times for Soaring or Test Track w/o Fast Pass. At the American Adventure and the pavilion in France all the seats were taken, something I haven’t seen in a while.
Waits for counter-service restaurants at Disney Springs were pretty long as well. We only had a 30-minute wait at Homecoming for lunch (I hadn’t been able to snag an ADR ahead of time); we considered that pretty decent.
We only visited the MK and Epcot, so I can’t report on how crowded the other parks were. The day we arrived (Friday, 8/2) it had been raining on/off all day and it pretty much continued after our arrival as well. It rained every day, but not all day, for the rest of our trip. The dew points were in the 70’s; it was very hot, muggy, and uncomfortable. We were grateful we could take mid-day breaks and head back easily to our resorts (BRV & CR).