Congratulations, eddiecat, on your dd's wedding! Glad that it went well! I hope she enjoyed every bit of her day (well, her and her groom's day) and that it wasn't marred for her by the absence of ds' kids.
I'm glad ds saw his way clear to come and that he and dd were enjoying each other's company. I know it must have warmed your heart to see that. I'm sorry his kids couldn't come and that this saddened him a bit. I'm also sorry to that dil wouldn't let gd attend even though the child very much wanted to.
Idk but I suspect it will matter to dil if the day comes when the kids confront her about why she kept them away from their dad's side of the family. Maybe they will accept her answers and maybe they won't. She may be in for a major conflict with them over this. Obviously, she's not worried about it now, but I don't envy her that day.
It sounds as if ds is pulling away, and, somehow, I imagine, he'll find a way to leave. He may want to wait until the kids are old enough to visit him without her say-so. And, of course, as you tell us, there's the financial angle. I'm sorry he's feeling "stuck," poor guy.
Has he thought of marriage counseling? Maybe that would help them sort out their differences on this and help them avoid a divorce? Just asking...