Yeah I actually live in Japan which is pretty similar, because Coeliac disease is rare over here so is the understanding and accommodating it. When I mention Gluten to some restaurants they think I am talking in English and they are unfamiliar with the word in Japanese.
So it seems I can write off my chances of getting some authentic Chinese gluten-free food at the airport, but at least there is a Thai restaurant in T3 so I won't starve. Its called 'Phrik Thai' for future reference.
I always assumed plain coffee was, but I have seen some controversy online about this. I know someone who is gluten free and only buys whole beans and grinds them herself because she doesn't trust how the grounds are processed.
I have confirmed that Member's Mark Ibuprofen are gluten free in three ways: the list of ingredients matches the list of gluten-free excepients from the Gluten Intolerance Group's list, I called the customer service number on the bottle (they confirmed it is gluten-free), and I found another website in which a dr claims it is gluten-free.