Myfriend nailed it.
What do you say when invited to wedding, held in a swanky country club, on a Sunday, and they order you a sealed, airline style meal (so kashrus is assured)to the invitation? I can’t make it because….. ?
Sure, you could make an excuse once, twice, a second time, But after a while, they see thru it and you look anti-social.
Think that’s a sticky situation? Hows this: You get invited to a mixed marriage. Do you go, and in effect, give this union your seal of approval? OK, this may not women in such a bind. But I(to the goyish velt) look very much like a Rabbi. In fact, more so than the “Brooks Brothers” rabbi who just performed the ceremony.
How do I get out of that one? Best bet: leave work at work.