Hi Sarah,
I'd start with the
Pagani Forest Exploration Trail, where you can see gorillas, hippos, colobus monkeys and meerkats, among other animals. The trail is in Africa and not far from Tusker House. You will pass the restaurant on your way to the trail entrance.
Because the trail is self-paced, you can decide how long to spend and when you need to leave to get to the restaurant, without worrying that you might be caught in a line or attraction and miss your reservation.
Besides, I love the gorillas and think a visit to their area is a great way to start a day at Animal Kingdom.
If you don't get enough time there, you can always pick up where you left off after breakfast.
I hope that helps. Please let us know if we can answer any other questions for you as you plan your first visit to Walt Disney World. Enjoy your time with your family!
Wilma