FWIW, I was at my father’s remarriage. However, the following facts should be pertinent to my decision to go:
1. My parents are divorced — B”H both are still alive.
2. My father is not frum and would not have understood that I not attend because of a minhag. There is also the fact that he wanted me there — and kibud av is min haTorah.
2a. My father and I were just getting over a three-year period of alienation that, to this day, I deeply regret. Not attending his wedding might have jeopardized that greatly.
3. My mother did not object to my going — on the contrary — she and my father were on good terms by then and encouraged us to go (interestingly enough, she and my step-mother are very good friends now).
So, after all was said and done, I decided to go.
The Wolf