Make Sunset Savannah as your top request. It’s the much larger savannah and has giraffes.
(The smaller Pembe savannah has Okapi, they are marvelous creatures, but not as majestic as giraffes)
Low floor would be a little closer to the animals.
To take advantage of the savannah’s, Kidani has the longest hallways.
Most of the resort can be close to cars (that park under the resort) but there’s only 1 bus stop near the middle (If you take the bus)
Hopefully you will plan to spend some time at the resort to take advantage of the animals. (The morning is their checkup time, so there is usually nothing to see, then). Kidani has a great pool for kids that age!