I started a similar thread after searching for something about this. (I typed "crowd" instead of "packed," so this didn't come up.) I used EasyWDW most days, but I also checked
Undercover Tourist. We had one uncrowded day, which was Thursday at Epcot. Soarin' hit an hour, and TT hit 70 mins, but that was it. We could walk easily, and the less popular rides were walk on. AK was marked green the day we went, and I almost turned around and left. It was so crowded that we couldn't move. Ride times never got too crazy (40 mins. for Dinosaur), but the people made me claustrophobic. It rained midday, though, and I think 3/4 of people left. Ended up being our best day. We had my 2 yr old niece, but managed to ride Everest 3x each, Kali River Rapids 2x each, safari 2x, and most everything else once (keep in mind most of those we're doing rider swap). We also played in the boneyard for about 2 hours. We didn't do any shows, though.
I checked my wait times app every day, but never saw under 30 mins. for any of the big rides at HS. TSM said 35 mins. at 8:45 on 2 different days! FP were out until 1 by then. We just skipped that park entirely. We did MK on a green, yellow, and red day. Red was much more crowded, but green wasn't great either. If I did it again then I would skip rope drop, play at the resort until 4, and head to MK at 5. It gets so much less crowded in the evening. To compare: waited over an hour for Splash at 5:00. It was walk on 3.5 hours later. BTM was at 70 mins. around 5:30, but we rode it twice between 10:15 and 10:40. Just amazing differences in crowds at night.