I expect by now you're tucked up in bed dreaming of tomorrow (or frantically doing last minute packing) but I do hope you have a super time and that your son soon recovers. I'm sure you're well stocked up with Calpol! I've always found medical facilities there are excellent should you need them and at least your husband speaks the language, which makes it even easier.
I'm sure Briar will forgive me for digressing, but the funniest thing I experienced was in a chemist in PEK. On hearing me greet the chemist in Arabic an English lady asked if I spoke the language. I said I knew very little and asked what the problem was. She then said her husband had head lice.

Well, as you can imagine, neither my Arabic or the trusty phrase book was up to that one so I said just pointed to the man and said in French that the man had fleas (scratching my head to get the point across). The chemist just smiled and said in English "oh, head lice" and gave her the necessary stuff!
Anyway dear, have a lovely time and we look forward to hearing from you when you all get back.