Last week I added explicit consent to user tracking on this blog. The result is that practically nobody agrees with the policy and that completely breaks analytics.
This is the number of daily session per last week:
And on the last month:
My current plan is to stop collecting IP addresses. Then I can drop explicit consent for GDPR. I only lose visitor country information after dropping IP addresses. A first-party session cookie for analytics does not seem to require consent for the Cookie Law if it is required by site functionality. As my site is a blog and analytics is necessary for providing more relevant content, the usage of cookie is therefore justified. This is my own interpretation, this is not a legal advice for similar cases.