Summer means barbecue, countless glasses of Pina Coladas and long, relaxing vacations with my family. I’ve to admit that traveling with twin kids hasn’t always been a smooth ride. In fact, our first few trips were a complete disaster. My husband and I had no idea how to enjoy our vacation without compromising our kids’ sleep. But eventually, we started to get the hang of it. Let me tell you, planning ahead is the key here. Before my twins turned 3, we used to carry pack n plays with us. Now