1. Inventions
2. Cafe Mickey
My favourite character meal is Inventions but I also love Cafe Mickey - we tend to do one one visit then the other the next.
The only characters we've always seen have been Mickey, Minnie (I think)and Pluto. I can't remember exactly who was where without looking through all my photos but from memory we've met Robin Hood

the Sheriff of Nottingham, Gideon, Eeyore, Tigger, Goofy, Baloo, Pinocchio, Gepetto, the Genie, Launchpad McQuack, Chip and Dale, and Suzy and Perla at either Inventions or Cafe Mickey over the years. Got to say the character interaction at both is great and we usually get to see about 8 characters.
I don't know how everyone else feels but not knowing exactly who will appear (apart from Mickey who seems to be pretty much a dead cert at Cafe Mickey

) just adds to the fun for me.