Kiulu Rafting should be suitable for 7~65 years old. Your daughter may be a bit too small. I don't know whether they allow your daughter sit on the middle of the boat. If do, you may join too. Of course, the infant price should be less.
I joined 'Prefect xxx' for the tour which it cost RM561 (full price for adult, 80% for youth, 50% for child). But actually, it is the rafting company (Riverbug) who send a coach to pick us from hotel in the morning.
On the day we played, it is save. 同時間有差不多5~6隻艇, guests from Japan, Shanghai and HK。因大部分都有小朋友及婦孺﹐都無『反艇』﹐不過啲 staff would play with those 有能之士﹐拉啲後生仔落水玩囉﹗
During those few days on KK, sunny in morning & 陰天 starting at about 3:00pm everyday. Sometimes shower, sometimes just dark. But usually, may able to see sunset in the evening.