I have been to Denmark four times. Total of more than two weeks. I have never changed Euros or Dollars to Kroner and never needed Danish cash.

I have also been to Chile for a total of at least two weeks, and I would not dream of trying to get by with no pesos. Even if you manage to go only to international hotels and tourist restaurants, imagine what you are missing at local markets, local transport, and local shops. On my last visit I bought several lapis lazuli figures for my children from a lady who carves them at her home in the country and brings them into Santiago on Saturday and Sunday to sell from a table, in a vacant lot. She was able to tell me all about where the stone comes from, how the figures are made, etc.

Of course, you could also buy them at the duty free shop at SCL...