I have to agree with what "mrkv60" wrote. We did NOT have a good time. The "captain" (king, master, Pain-in-the-....) had a bad attitude and he was a downer. He barked out commands to the staff, and made no eye contact with any of the guests to the point where no one felt like guests. From sub-par snorkels equipment (the mouth pieces had gotten too soft), to barely having enough equipment at all, the captain did not care and he showed it. We also had Kenny, Roger and team on our excursion, and they made all the difference. They helped where they could, and where the captain would allow. There were supposed to be three stops - 1) snorkeling with turtles, 2) snorkeling a reef, and 3) a beach. All the snorkeling was off the end of the catamaran, which was OK had there been anything other than the drop stairs to hang on to as you got off or back on the craft. Now, admittedly I do not swim as well as most others, but it would have been better for me if the descriptions from the ship were clear on what to expect. What was more amazing to my wife and I is that we go to our lasr stop, we stopped short, anchored 30 yards off the beach and the captain announced - "if anyone wants to go to the beach we recommend wearing a life vest if you are not a strong swimmer". WTH!! I am on vacation, and wanted to go to the beach via catamaran, not be teased by getting "almost there" and then told "swim for it!" There were some pretty strong currents going on and only half the boat decided to even get in the water on the last stop. Then some poor couple ended up losing the contents of the water wallet, including ship passes, drivers licenses, credit card, and cash. We saw it floating a good distance out to open water, but the captain would do nothing. Someone went to try to swim to it, but the captain called them back. I understand the concern for safety, but come on - do SOMETHING! Some of the guests were able to flag down a jet ski driver, and he and his rider went looking for a while and came back with one ID and some cash that they found floating. Soon it was time to head back, and instead of turning the boat toward where the last objects were seen, the captain made a diagonal bee line away from the area, motors blazing. He sure as heck had time to take an extra pass down the bay before we pulled in to the harbor, but seemed to have gone out of his way to give the folks who lost their cards and money no respect or comfort by even trying to do what was right. We were both disappointed in the Tiami experience because of two things: the captain's crappy attitude (or just plain dislike of people) and the vague description of what to expect on the excursion. The only reason this excursion did not get a "terrible" rank is because of the crew - they really tried hard to make up for Cap'n Crabbypants.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.