Just to throw in my two cents...we loved our 8am breakfast. We were the second family through the tapstiles into the park for our early breakfast, and I'm not sure where the first family ended up because we were all alone. The Magic Kingdom is pretty first thing in the morning, but it never feels truly empty during early ADR time because there are more options for early entry meals. Animal Kingdom is a whole different story. We really felt like the park was open just for us.
We checked in, were one of the first groups seated, the characters came to our table first, and we were finished by 8:30am.
This allowed us to further explore the part of Africa around Tusker House and get some lovely pictures. We wandered slowly, talked to CMs, and just generally enjoyed our morning. We didn't rush to jump in line for the safari, and were in the second truck to go out onto the Savanna.
It was one of our best mornings at a park EVER, and we were so happy to be able to take the time to really SEE everything around us.
I hope you enjoy your vacation and your day at the Animal Kingdom