Our nieces and nephews are the best. I'm grateful that on my side, our kids are the younger ones, and that the big kids are so great at caring for the little ones. I would highly recommend having 11- and 13-year-old nieces! Our kids and the grandkids of mom and dad's neighbors played and ran around all day.
I reminisced about my own childhood as the pack of 9 or 10 kids aged 4-14 ran around playing kickball, basketball, baseball and kick the can. Kick the can! I'm so glad that game is still surviving and thriving! Adult intervention played little to no role in the activities of the day, besides just knowing vaguely where in the "neighborhood" they were, and ensuring people wore life jackets near the water. I'm pretty sure there was at least one application of sunscreen, I promise!
The day encapsulated what I feel is missing from many childhoods today: freedom to play, run, be bored, make up games, and get to know other kids all without adults looking over their shoulders. Obviously I loved that two of the kids were otherwise occupied all day, which is always nice! I just ate up all the laughter and screams and childhood joy they spread as their shenannigas took place. What a great day!