A few months ago, I submitted a paper to a journal, and received a "can be published if such-and-such issues are addressed properly". I know who one of the reviewers (the one that wrote the most helpful review, in fact) is, largely because he decided to reveal his name in the review. In a couple of weeks, I'll happen to be in the vicinity of his university (this is serendipitous; I had already planned this trip before I knew he would be one of the reviewers).
Is it acceptable to contact him, tell him I'm the author of that paper he reviewed, and ask him if he has time for a meeting to discuss how I am addressing his comments? I have no shame in admitting that I am considering doing this to ensure that he is happy with my amendments to the paper, which in turn should make the second round of reviewing go more smoothly.