Shop in the morning before your meeting (head to the shop 9am and make quick decisions)? Where are you staying, some of the luxury hotels might be able to organize something in the morning via their concierge. But then we are talking about real luxury hotels and not ordinary hotels.

Remember to complain to Finnair, you might get 10EUR coupon for your inflight duty-free shopping or if you complain really well then maybe 15EUR.