We haven't been to either, we were leaning Kidani for June 2018, but now are not so sure if we wouldn't rather go Jambo. Given the dynamics of our party, would this make your choices any different:
1) Party of 9, renting points for two 2BR units, so each unit will have two adult couples, plus 1 4YO in one of them (not sure the extra bathroom would be THAT important).
2) We all walk for exercise, many wear Fitbits and walk at least 3 miles daily, so not sure the walk would matter.
3) Most of my gang doesn't' even eat breakfast, although I will definitely do so at least once at Boma, even if I eat solo (I'm the early riser of the group).
4) We chose Kidani, after watching videos of the water play area, but I guess if we go Jambo instead, that pool is nice too, and our 4YO won't know what she's missing anyway.
5) After reviewing availability charts, we're booking at the 7 month window. Could most Jambo 2BRs be gone by then, forcing us to go to Kidani by default?
6) We Like the Community Hall concept at Kidani as well, and assume it's a bit more tranquil.