We just returned and my 10yo DS enjoyed the pre-registered activities (King of Comedy, Space Goo, Aloha Party...in that order), but didn't have any interest in just hanging out there like my 5yo DS. There seemed to be some older kids in the activities, but mostly 8U just hanging out.
We stayed for 7 nights, requested the 3 activities, and received all 3. The boys also really enjoyed the classes in Pau Hanna...Canoe Racing, Animation, and Ukulele practice. Thankfully, all 3 were on the same day (Thursday), so I just had to get up early/stand in line one day. I was in line an hour early, and was second in line. It was Presidents' day week, and busy with kids off break.
Occasionally they have some Tween (11-12 yo) activities. They are few and far between, and should be 9-12 IMO. They have a decent amount of teen activities, but the 9-12 yo kids are kind of in a black hole, activity wise.
One night, at the end of the day we rolled into Pau Hana and saw some families making leis. We didn't have time to stay, as we were going to do the Mehenuene Trail, so they just bagged up a ridiculous amount of flowers + needles/strings, and gave them to us to work on in our rooms.
All of them really enjoyed the Starlit Hui...the pre-show activities/crafts were cool. We managed to do all three (corsage, star, fish). My 5yo didn't catch the hula practicing...but just jumped right on stage when it was time to perform during the show, lol.
The Daily Iwa are available each night at 7pm...became a nightly job for my 10yo to head to the lobby and pick one up.