The Wild Africa Trek is an awesome experience, in which you can enjoy close encounters with the wild life at Animal Kingdom. This three hour tour includes a tasting of African inspired foods, so you probably don't need to have Donald's Safari Breakfast on the same day that you do this tour.
Personally, I would book the Wild Africa Trek early in the morning because that is when the animals are most active, and I would skip Donald's Safari Breakfast. Since you can experience yummy foods on the tour, you really don't need both.
There is a promotion in which you can save $50 if you book a tour after 11:45 a.m. from May 29-August 25, 2012. This is a great deal, especially if you want to experience Donald's Safari Breakfast as well. You will still get the same tour and have an opportunity to see all of the animals. The animals are just not as active later in the day. They typically rest and nap during the hot mid-day hours.
Just call 407-WDW-TOUR to book.
Magically,
Stacy