Have all the ATMs in Corralejo started charging a transaction fee for withdrawing Euros? Can`t find one that doesn`t.
This link from Revolut last year suggests there are some banks who started charging ATM charges on foreign issued cards last year.... including Santander and Sadabell
https://community.revolut.com/t/revolut-cards-in-spain/24847
This other link suggests Bankia were not charging though, but it is from Summer 2018
https://community.revolut.com/t/santander-bank-atm-fees-in-spain/9992/38