Thank you so much for that once in a lifetime opportunity! I had a great time. I am not only grateful for the transaction, but also for making sure that I will get the most out of it. From making sure I'm comfortable that you had Adam as my one-on-one instructor to requesting that Chinese diver (Chen? I forgot his name) to take pictures of me underwater, you had all that arranged for me.
Arigatou gozaimasu!
doueteshimashite