I've been diving with Tank Ha for about 10 years and while I do miss some of my favorites who are no longer around, I very much enjoy diving with the great DM's who are still there, and the friendly staff continues to provide excellent customer service. I haven't noticed any lowering of their standards, and wonder if the incidents you saw might have taken place with any newer staff ? From my experience with them, I think the new owners would appeciate your feedback and giving them the opportunity to address the issues. This might also help determine if the changes you've noticed were due to an individual DM's handling of the situations in a manner that managment might not be aware of. I appreciate your sharing this information - I will continue to dive with Tank Ha and expect to find that they are maintaining the safety-conscious and professional behavior that has always been a priority.