You still have to implement it in case you are visited by EU national (even if that is just a person visiting the site without intention to buy) - as you should

You still have to implement it in case you are visited by EU national (even if that is just a person visiting the site without intention to buy) - as you shouldn't log EU personal data without permission. Even if you filter out European IP addresses you have to consider that EU national can be visiting from the US for example and you still cannot log without permission.