OK, first off... take a deep breath....
Now:
1. A character breakfast is a breakfast at WDW where you dine with some characters ie Mickey, Goofy, Chip & Dale, the Princesses, etc. The breakfasts are done in a WDW restaurant, either in a park or at a resort.
2. There are several character breakfasts you can go to.
AllEarsNet will give you a complete list of all the character dinings available.
3. Character dinings are done every day
4. Priority seating or PS is Disney's way of a reservation. Unlike a reservation though, you don't reserve a table at a set time. Instead, you reserve the right to the next available table closest to the time you asked for. You can start getting a PS 90 days prior to the date you're seeking
5. The hardest character breakfast to get is the Princesses breakfasts, mainly Cinderella's royal table and the Storybook breakfast in Norway. People are quite zealous in their pusuit of these coveted seats.
6. Since you'll be at MK on that day, I suggest going to the Crystal Palace for breakfast with Pooh and friends. The food is excellent, and if you get an early breakfast time, you might just be able to walk down Main Street when it's empty.
Last but not least.... do your research, take your time, and breathe!
