Re: courtesy flags in Canary Islands and Caribbean
I live in Canary Islands. I speak Spanish. There is no 'Canary Islands courtesy flag'.
There is a Canary Islands local colours flag (vertical white yellow blue) but it is NOT a courtesy flag.
We are not Catalan. We are not nationalists. We do not wave flags too much.
Bring plain small Spanish flag and fly it from the correct spreader and that's that. If you want to be super courteous, you may fly canary colours UNDER the Spanish courtesy flag, in the right place.
Canary people are not too much into flag waving. This is not Catalunya nor the Basque country or Brittany.
You can as well come without any courtesy flag, just be honest and kind to people and this is what counts here.