At MK today. I was changing resorts so I arrived at 11am, and it was very hot and crowded - I left and came back at 4pm. Taking it easy, I managed to do: Starbucks (I swear this has longer lines than most rides), Dumbo, Barnstormer x2, Peter Pan, Space Mountain, 7DMT, Haunted Mansion, and BTM. At 7pm the crowds on Main Street were a bit crazy as far as post-covid crowds go, no way to practice social distancing. The line for the Emporium extended beyond Casey's corner. That said, it felt significantly nicer in the afternoon. If you are not spending the whole day at the park, I'd strongly recommend arriving later in the day. The physical lines (not wait times) were much shorter.
I agree with everyone else about the wait times, they are wildly unreliable. 7DMT was showing 45min in the morning when the line was aaaall the way to the Little Mermaid (!!!), and also in the afternoon when the line wasn't even out the door. Haunted Mansion showed 30min when it was walk on and when the line was out the Mansion, Branstormer showed 20min and I was literally the only person riding it (twice).