There are some places you can get socially distanced pics with characters, but there is no schedule as to when they're out. I'll do a separate post with pics, since the pics are still on my phone.
MK: characters on stages, you stand in front of the stage, character is 6ft back on stage. Tomorrowland stage has Stitch and Buzz? Across from Pirates is Jack Sparrow...my kids had great interaction with him, he was chatting with us and then we got pics.
Epcot: Garden Grill character meal. You're seated on lower level, characters walk around upper level and you can take pics. Next to Journey to the Imagination, characters are frolicking in the grass, and then come close enough to the fence to take pics. We did one with Joy, and we saw Pooh out as well. They do pics shortly before going in for a break.