1.The theme for this poem is life changes. No matter how bad he wanted to stay a child,he eventually grew up and had to become an adult.
2.The tone of the poem is detached, because he's not the same kid he once was. He's turning the big 10, which he'll have more responsibilities to complete.
3.The mood is disappointment, because he's no longer the little kid he used to be. He can no longer be the little "Arabian Wizard" he always was.