Raglan Road might be a good choice; I haven't looked at their kids menu but the place is gorgeous with great service. It's on PI but you do not need a pass to get into it.
Rainforest is at DTD - though I prefer to not eat at a chain place, a lot of people don't have them in their city so it's still new to them. That's a huge hit with older children especially.
I would not recommend Planet Hollywood, however.