Copenhagen airport must have the hardest free wifi in the world. After about 30 minutes of attempting to get free wifi during breakfast I gave up.
One thing CPH did do well was to have metro ticket machines in the baggage pickup area, so I could overspend on a 3-day pass (I ended up walking pretty much everywhere I went) while I was waiting for my bags. Normal people would not walk as much as I did - 80 minutes walking there and back for something is fine by me.