I love the character interactions at 1900 Park Fare. I don't really have another favorite for breakfast. Crystal Palace is okay. I have nothing great to say about it but nothing bad, either.
As for dinner....I don't have great recommendations except to say I DO NOT recommend Chef Mickey's. It was pretty good the few times I was there more than a decade ago, but the last couple of times I have been there the food was just not good. I love food and had a very hard time finding anything I would consider tasty. Although I will say what really ruined it for me was where we were seated the last time. We were tucked away around a corner in an alcove that seems like it should have been a janitor's closet! We couldn't really see the other guests or what was going on, and there was no theming in this little room. The walls were a grayish white, and it was very boring other than the characters coming around now and again. I included a picture so you could see a little bit of what the closet was like. What's that on the wall, you ask? A fire extinguisher. The only thing in the room to look at. It was very cramped, and what you see is pretty much the entirety of the room as they were standing right behind their chairs and I was seated across from them against the wall.
Now I haven't had the pleasure of dining at either Tusker House (do have ADRs for next trip) or Garden Grove, but I have heard they are outstanding for character interactions and theming.