I've heard that Japanese is spoken by some Taiwanese people who were old enough to have lived during Japanese rule, along with some people who've learnt it for other reasons. For younger people, I've been told Mandarin or English would be the best means of communication, but I have a tendency to socialize a lot with retirees.
How similar is the Japanese spoken in Taiwan by native speakers to the Japanese used in Japan? Did the two diverge after 1945? Are words that entered Japanese after 1945 also used in the Japanese spoken in Taiwan?