Eighteen summers, that’s all we have with our children before they leave the nest. The weight of that number is weighing heavy on me lately. I am already at summer #12 and #10 with my daughters. We long ago surpassed the halfway mark and I am acutely aware of how fast it’s all gone. Summer, like our children’s growth, is fleeting. Both need to be embraced without reservation and with complete enthusiasm. That’s why I believe there are 10 things you should do every summer with you kids without …