Minnie and friends breakfast is inside the park at the Plaza Inn. I've got a surprise character brekki booked there for early next month. I can tell you first hand just by eating lunch there in Oct that the food is generally of high quality and consistantly above average at the parks. This is one of the main reasons I've booked the character brekki there, as well as all the consistantly good reviews on this board.
Now as for characters, the most common are: Mickey, Minnie, Goofy, Pluto, Chip and Dale. The princesses hang out at the PFF, and you can find Tiana in front of the French Market in NOS at different times of the day. Not seen as much, but there's a good chance you will encounter: Hook, Alice, the mad hatter, Gepetto, Peter Pan, Wendy, Jasime, Alladin, and other's I can't think of at the top of my head. You will tend to see more characters during the peak season than the off months, which is the time I'm heading down at the beginning of the month. If you hit rain the characters will disappear, but once the rain stops will come out in droves. If you are into parades, then you will see some of the less common ones there. Hope that this helps you out. Don't know about the characters in Tangled, as I was there in Oct before the meet and greet opened. You also can find Tinkerbell and friends and their meet and greet.
