I'll be there for a week in November. My partner is going for a conference, I'm going to tag along with her & hang out solo during the days.

Any particular recommendations?

Also, how hard is it to get some functional language under your belt? I'm pretty good with languages but not sure how much effort I'll have time to put in beforehand. I've always been under the impression that Mandarin/Cantonese are diabolically difficult.