Hi Xaden,
I am happy to assist you! Tusker House Restaurant is located in the Africa section of Disney's Animal Kingdom & Finding Nemo-The Musical is located in the DinoLand U.S.A. section. You are correct, they are a bit of a hike from each other.
You do not have to reserve tickets at Tusker House in order to attend a show. However, Guests dining at Tusker House between the hours of 1 p.m. - 1:40 p.m. receive a voucher for reserved seating during the 3:15 p.m. Finding Nemo performance & Guests dining between 1:50 p.m. - 2:45 p.m. receive a voucher for reserved seating for the 4:45 p.m. show. Keep in mind that these times can change but were current when I spoke with a super helpful Cast Member today.
Typically on the
online calendar for Disney's Animal Kingdom (DAK), you can find daily park hours, Extra Magic Hours (when scheduled), performance times for the Festival of the Lion King & Flights of Wonder and Mickey's Jammin' Jungle Parade. However, they don't usually list performance times for Finding Nemo-The Musical. It is usually performed 4 to 5 days daily & these performance times are available on the Times Guide you can pick up when you enter DAK. Steve Soares has an
unofficial Disney website that posts times for live entertainment at Disney World. You can do an internet search for his name. Times are usually posted a week in advanced. Again - its an unofficial site but I've found it to be very helpful. Make sure you confirm times on the Times Guide as schedules are always subject to change without notice.
I am also happy to give you some suggestions of attractions that your four year old may enjoy so that you can plan out your day. Visit me again with which parks you may be interested in visiting. Wishing you many magical memories :-) Allison