I have known many witnesses that would refuse to go into a church under any circumstances. My mother, when she was still a witness, did not go to her fathers remarriage in a church, though we went to the reception.
When I was 20, a close friend got married in a church, and I did extensive research in the magazines on the WTS policy of going into a church. They certainly were frowning upon it, but did not say you could not do it.
I went to the wedding in the church, felt fine, no demons attacked me, and I simply chose not to tell the elders about it or go out proclaiming what I did. Why answer up to them anyways?