Got to spend the week in Japan after doing a little refresh. I lived there for a year about 15 years ago. Was able to use it for practical things but not conversation, so that gives me something to work towards going forward. It's mostly vocab that's missing, but grammar is still mostly intact. And I didn't really have to think too hard about it; the things were either there or not. Also noticed I have less of a delay in processing what I do understand compared to English.

The technology has changed so much since I was learning it. Huge kanji dictionaries gave way to electronic dictionaries gave way to phones.