This is a long shot, but I figured if anyone can help me, it would be you great folks. I was on Carnival Glory in 2014; it was a Western Caribbean itinerary. I took an excursion that I would love to do again. But, I can't remember where or what it was. We took a boat to an island. There was a nice beach and several yellow buildings. The reef was right there. The snorkeling was DIY and you entered the water from a dock and you following along a roped area that was shallow and narrow. At the end of that roped area, you entered the reef that was deep and a circular area that had the most breathtaking beauty. Does this sound familiar to anyone?