OP of the mentioned review is Asian and fluent in Japanese so he was lucky to be allowed in by walk in.
If it's clear that you are a foreigner no chance. The whole group is pretty strict when it comes to foreigners. A few weeks ago I chatted to a girl who started at Eden after moving there from another foreigner NG shop. She messaged me on Twitter because she thought now she would be able to take my appointment....nope. I think I also asked the shop directly and they proudly told me that their USP is that only purebloods are allowed in.