Cross your fingers. With the help of my japanese airsoft friend, I was able to use his gf's home address and info. She goes back to japan for her sister's wedding, in May. So here's hopping everything went smoothly.
Due to the fact that the Yamato online shopping server was bombarded It took 1.5 hours for me to get thru. So I sent my friend and his gf home early and continued to try to get thru. finally I got thru and utilizing my kindergarten japanese proficiency and conversing with my friend over the phone I was able to enter in all of his gf's info. the weird part was that I clicked on the selection for credit card ppayment but it never asked for a credit card number. According to my friend, Yamato will confirm the order on their end and if they have the product available, they will send an email asking for payment/credit card info. weird.
But here's hoping I did everything correctly while ordering.