I was surprised in Sapporo that a JR staff came to me and asked directly in Japanese ご案内しましょうか？ (can I help you ?) when I was looking at the train map (it took a bit long as I was admiring the strange place names in Hokkaido and looking what kanji they used for them).
The only time I can recall being addressed in Japanese at a station was by a older woman standing nearby on a platform at Matsumoto who asked "並んでいますか” in a very normal conversational tone. I was too shocked to say anything but そうです。to which she didn't believe and proceeded to gesture me up a step up for all the three or four of us waiting to be able to line up in proper formation.