Thanks everybody for your concern,
Brian, I´ll check airfrance to see about the medical supplies bag. As you say japanese people are very open with this, for example the diapers parade is quite significant, about the language, since I was 15 I learnt the hiragana and katakana but 2 years ago I bought a very good book and started learning japanese seriously. I speak spanish, french, italian and english and japanese has nothing common with any other language but it´s very interesting, and one of the dificult things is the protocol and politeness. <<<for example, there´s 4 different ways to say "I" depending of your position related to who you are talking to, and if you want to be very polite, polite, normal or rough. So if you don´t know anyone like us the best way is to us the most polite form always! For a good first impression. Oh! and by the way, the diapers market isn´t good just for us incontinent, but for AB/DL, cause as you´ll know they´re quite fetishists and so in shinjuku in the sex stores I heard there is also a lot of offer for them.
Knowing this I´ll think if I bring them from Spain or buy them there, I ain´t sure yet. But happy to talk about Japan! We could do a post just about it! "diapers in Japan"

or even "Japan" just. Thanks Brian and all the others. Hope having more informating or wHatever related replies. Best regards!!
AND MERRY CHRISTMAS FOR ALL THE SITE USERS!!