Ogenki desu ka. Nihongo no benkyou wa doudesu ka. Hiragana to Katakana wa zenbu wakarimasuka.
Apologies for the delayed response, I wonder if you have managed to learn all of the Katakana by now？
I am delighted to hear such enthusiasm and am glad that you are already seeing the difference on your trips to Nihon. How are you getting on with Kanji？I am sure that you will find it interesting and hopefully it will give you even more of an insight into the language, people and the culture .
I hope you will continue to enjoy your learning and time in 日本.
Merry Christmas! ”メリー クリスマス！”