By: Lisa Coleman20 years ago I sat on the shores of Playa la Ropa in Zihuatanejo celebrating my 30th birthday. My dear friend from Switzerland told me she had planned a party on the beach. It sounded great, but since this was a new destination for me, turns out she was the only person I knew when I arrived at my own fiesta. A gorgeous table covered with plates of fresh fish, flowers and gifts came courtesy of the locals ? people I?d never met, friends I didn?t even know I had.