I think some have got this wrong saying its a kids space I think its adult. If you have kids and you are on the top deck with some slides, waterzone all together that works, also I doubt they would put this zone right next to some top suites that just won't work.
Also having to go up to flowrider etc. for those early teen kids whilst you are down there doesn't work either. So I suspect there will be a flowrider on the top, kids zone, slides all in the same vicinity and this will actually be more adult related zone. We shall see.