Thank you all for your helpful thoughts and replies.
It's true, these folks are clueless. Not only in spiritual matters, but in this case, it appears it's going to be a very big wedding and our lack of presence and lack of a gift is not likely to be noticed .. particularly because we are not friend's of the bride.
As far as my "influence" with my H ... we've already been over this on another occasion. The last "wedding" was a high school buddy of my H's back in 2002 who was getting married the second time. We hassled about it over and over again because the friend was asking my H to be a groomsman for the second time! My H went to the local church and talked to a visiting priest who apparently told him that as long as his friend wasn't Catholic, it was okay to stand up for him again at his second wedding. It caused a lot of contention between us. But ultimately we went ... only at the wedding did my H find out that the bride was a MORMON and that an LDS Bishop was conducting the ceremony!! Argh. It was too late to back out .. but it was just ridiculous.
But my H has come along way since then, and helped in no small part due to that circuмstance itself.
As I said previously, we'd love to know actual practicing Catholics who were getting married with no previous marriages or divorces or whatever! But we know no one who matches that description.