We were also at Epcot yesterday. The morning was great! We jumped on TT as soon as they let us into the park around 10:15, after just 5-10 minutes waiting for the ride to get started. By 10:45 we were walking on to Frozen with NO wait! I couldn’t believe how short the Frozen line was the first hour! We were also able to do Soarin, LWTL and Figment before lunch at 12:15. Looked at some art and headed out at 1:30pm.
When we came back at 5:30pm, it was MUCH busier. World Showcase was harder to walk around, Frozen line was down to China. It wasn’t really comfortable to be there, although the masking was better than we expected (having heard horror stories) about walking/drinking/eating.
We were at Epcot for MLK day weekend 2020 and it was so wall-to-wall people we literally couldn’t move. It was definitely not like that yesterday, but it also was very busy in the evening . We dealt with it by heading to the front of the park and doing more rides with pretty short waits, then circled back to buy something, and headed out.