What a lovely view! - happy kids and a family spending time together - such a treasure! In moments like this, hearing the kids' laughter is like a music to the parents' ears.
I can relate to the feeling that your son wants you to be part of his adventures, my son is like this also. I admit that sometimes I become impatient but I realized how precious it is for him so everytime he wants me to get involve in his play, I pause for a while and pay attention to him or even join him in his little innocent world, just like what you did.
Good job mommy! Happy parenting!