The Texas Flower Gardens/Stetson are considered 'big-boy' diving, not for newbies. Under benign weather and current conditions (usually mid summer in the Northern Hemisphere) it can be a gentle as a kitten, but other times the waves and currents (and depths) are going to be VERY challenging, even SCARY! As mentioned, the boat doesn't deploy divemasters to babysit divers while diving, so you'll want to hook up with a trip leader or other experienced divers. If you've dove the Flower Gardens with any frequency, you'll gain invaluable real-world dive experience for other challenging dive locations around the world.