Just joined the board. My wife and I live in Dallas and love the sport. We're off to Cozumel July 19 for a week of diving and than back there again in October for another week. If anyone has any suggestions on do's and don'ts I would appreicate hearing them. We'll be staying at the Fiesta Americana and diving with Tony Costillio of Emerald Dolphis Dive services. Any feedback on those?