Thanks to all for any input. That is useful to know about the drivers license. I didn't know KYC would be required for BUY orders (BATMTwo description - A customer's identity can (optionally) be checked...). Maybe just here in Spain it is not required, but it is a point of interest for us (especially with cards like Bitnovo that do not require any information).
Thanks again.
This
page (which I believe is where you took the information from) is meant for the people who are interested in buying and running an ATM. Not for the people who use the machine to buy/ sell.
KYC is required but you'll only be asked to verify your documents after buying/selling a certain amount. Take a look at
CoinATMRadar, it will allow you to check the limits for the BTMs in your area.