Hi Katie!
Chef Mickey's is one of my favorite restaurants at Walt Disney World! Not only is the food wonderful, but all of the gang is there to take pictures with. This restaurant is great for breakfast and dinner.
The Garden Grill at Epcot is also a great character dining experience, however it it only available for dinner. The food is served family style, meaning you stay at your table to dine and you can have as much as you care to eat. This is a rotating restaurant, so the kids get entertained all the way around!
Another suggestion for a character breakfast is
'Ohana's Best Friends Breakfast. The characters here are Lilo, Stitch, Mickey Mouse and Pluto. My son is really into Lilo and Stitch right now, so I have reservations here for his 4th birthday this year.
I do suggest you book right away since your vacation is next month. Spots for character dining tend to fill up very fast. You can call (407) WDW-DINE to make your reservations.
Have a magical day!
Leslie