Any flight changes or cancellations?
Sorry, don't know.
Is public transport running as normal, for example?
Yes.
Radio stations are not playing loud music, unless it's an old 80's rock ballard. Eska Rock is not worth listening to. TV is rubbish... old patriotic films and constant reminders of the crash.
For a nation in mourning I don't see many flags at the entrance of buildings, but this will increase as the week goes on.
I think that most things that hint at enjoyment have been canceled, sport, concerts, etc.
Business, shops are open as usual. I don't know about tourist attractions... museums etc.
A lot of people are resigned to it, fed up with it and just plodding on. Some don't care and of course some are mourning in the way that they choose.