Wedding stress - the slow build up

I just had a rather long conversation with Mum about Dave's wedding. It's getting closer now, and as we approach it she's getting progressively more stressed about how she's going to manage it, which parts she's going to be able to attend, and how only to attend bits of it without upsetting Dave and his fiancée too much (they're being a little uncompromising, I have to say).

Basically, she can't do all of it, not a whole day from 2pm until the evening including a dinner and lots of noise and socialising etc. But Dave wants her to do it all; or at least, in an ideal world she'd be doing everything, and he wants his wedding to be perfect, so he's pitching for the ideal world scenario.

Unstoppable object? Meet my friend the immovable wall.

Neither of them seem willing or able to compromise very easily, so I don't know how it's going to end up really. I've been trying to think up all sorts of different plans that might be doable by Mum and acceptable to Dave, and it isn't really working very well at the moment. I don't know why I'm feeling responsible for sorting it out of course, but that's just what I do. And when Dave's being intransigent, Mum ends up feeling like he doesn't really want her to go at all, and so it all goes on and you can see why I ended up on the phone for ages.

Hmm. So I'm not really looking forward to my brother's wedding right now. If we can come up with a plan then I'll be able to feel better about it. Or alternatively I could try to stop caring and let other people sort themselves out for a change.