Hi, I'm new to Steemit and late for your post but wanted to leave a comment.

I love roleplaying with kids. You have to change the plot and some elements - like you wrote with the long questioning. But it's interesting because they sometimes do things that you hadn't expected. (OK, so no difference to adults there...)

I even had a GM last year who was 7 years old. It was an easy game system (Dungeonslayers, only in German I think) and the plot he thought out was quite basic - but there was a little boy leading three adult players through a dungeon and we loved it!