We're staying at Kidani again in mid-Feb. It's been over 7 yrs since we stayed there and 5 1/2 since Jambo....so my info/thoughts are pretty old!
Both resorts have 'cultural activities'--drumming lessons, talk by a cultural representative, various animal activities, etc. Both resorts offer so much more than the usual pool activities and nightly movies--it's why we're staying there in February...the last half of our trip will be parkless due to our annual passes expiring that Tuesday. No matter which place you're staying, you can enjoy the activities at both resorts! And both resorts have pools!
Pros to Jambo: quick service restaurant, Boma, bigger shop, grander lobby. For us, we had a better savannah view at Kidani than our stay at Jambo...but I assume it's really hit or miss for both resorts...depends on your room location...do the animals 'like' that area?
Enjoy your stay at Jambo! If you leave there feeling it was too 'busy' for you, or you wish you were closer to the community hall and the water play area, try Kidani next!