Edson,
I noticed in your original that there's a childrens' swingset at ground level off to the right. If that is still part of the plan, the tall stone wall in your revised plan will keep eager children from darting straight for the swings and tumbling from the top of the patio over the wall.
But I'd humbly suggest improving the sight lines from clubhouse, or at least from top of patio, across to the swings, so children can be seen while they play.
Kind regards,
Jonathan