I would log it. And on the "you have proof of a visit"; even this is not needed. One of our earth caches was just archived by the reviewer because we asked for proof (of any kind) that you actually visited the site. This was reason enough to archive the cache without any communication with us. In short: anwers to questions are needed, proof of a visit is not, and may not even be requested by the CO (or the EC will be archived).
So: if you can answer the questions, this is enough, at least according to the reviewers.