The drawing part is very similar to the Animation Academy at DLR, and then you get to paint Mickey, Minnie or Stitch on plastic. My kids, 6 and 8, really liked it. My 6 year old finished his painting very quickly and then a CM visited with him for a while to keep him busy. We did the music class that same afternoon, and we liked the fist part where they showed us the different Hawaiian instruments (my daughter got to come up and demonstrate one of them, and Dale came and banged on the window and waved at her!) But my kids had trouble with the Ukulele. My dad is a retired elementary school teacher who taught music for a number of years, and he usually started Ukulele with grade 5 and up, since younger kids' hands are too small and they are not quite coordinated enough. We stayed for about 30 minutes, but my kids were getting frustrated with the cords, which were quite hard, so we said thank-you and goodbye to the CMs (which were the same ones from the animation session that morning) and they didn't mind that we left early. I really liked learning about the instruments before going to the Starlight Hui, because we saw those same instruments in the show.
We signed up just after 8am that day. When we arrived for the Animation, we tried to sit at a table in the front and center, but the CM said that the seating is assigned based on when you sign up, not when you arrive for the activity, and he directed us to our table. It was first come, first served seating for the music class.
The activities on the Daily Iwa are organized by Ohana, Kids and Teens, so you can see which ones are appropriate. DH and I did the nature/animal walk while the kids did Space Goo - again, it was the same CM that did the Animation and the Music class. There were some kids on the nature tour, but it's geared more towards adults.