My family lives overseas so I see them once a year if I'm lucky (mostly my DM and my uncle). In February we could go for three weeks but I would end up missing a wedding I've known about for longer than a year, and as sad as it is this is the first wedding I've been ever invited yo. I've attended 5 total, but 2 were family and three I was my exHs +1.
My DM says it's fine and understands the wedding is important but I feel bad my DD will miss out on her family because of the wedding, although my friend who's getting married is also very fond of my DD and she's said a few times she expects my DD to attend.