We just recently stayed at Kidani and there is a difference between the two. Kidani only has one place to eat which is not open for breakfast. Jambo has two sit down eateries (Boma - buffet, Jiko - upscale). Boma is open for breakfast. There is a quick service area in Jambo that is open all day and has general fare. The pools are also different. The Kidani children's are is wonderful. My son could have spent hours there. It is basically a small scale waterpark with water cannons and such. There is also a large pool area. Jambo only has a regular pool. Depending on where you are staying the walk between the two can be anywhere from 5 to 10 minutes. You can catch a bus, but, IMO, it's just easier to walk it. For me, we would select Kidani because of the pool area. My son just loved it and we didn't mind the walk. However, if the pool isn't you thing, you may want Jambo for the convience of the places to eat. Both are lovely and you will see generally the same animals at each (there are some exceptions). Enjoy your trip!