Thanks to all that replied. We are in our early 50's, enjoying our new lives together, second trip to Coz(Went there on our honeymoon in '03. Had little idea at the time about the diving in Coz, just picked it on a whim cuz it was the furthest we could fly on AKAir) Have done a buch of snorkeling (Cook Islands, Fiji, Coz, Akumal). Always meant to take a resort course to try diving, but finally made the commitment this winter, and the timing worked out with a vacation, so Coz was the logical choice. Will be staying at Villas Las Anclas, and doing our OW with Blue Angel. Maybe we'll meet up with some of you when we're down there.