All of our character interactions were great. My favorite as far as being very animated and talkative was Alice, in Epcot. My least favorite was Belle at the Princess dinner. She smiled and spoke a little but really didn't act like she wanted to be there. But the Belle in blue in Epcot was just the opposite.
I actually really enjoyed the character meets where there were dedicated buildings or areas for them. The ones where they were there for hours (switching out). I didn't like the ones out in the open air that were only for 30 minutes at a time with a 30 minute wait in between. There was a couple of times we walked up to get in line only to be told they were leaving and wouldn't be back until later. I know they have to do this, and as an adult, I can understand, but kids that were flying up because they could see them were very disappointed to be told they couldn't meet them.