That annoyed me too! I don't know why, stupid wedding ceremony details always annoy me, like when Lorelai and Chris got married in a church in France (don't get me started!). I just don't get why they didn't just plan a civil wedding where I assume you'd have a lot less hassle. I don't know, in Ireland you have to give 3 month's notice of a wedding no matter what type it is, so 2 weeks would be out anyway. I know not everywhere is like Vegas, but I assume a civil wedding in the States would have fewer strings attached than a Catholic wedding. I mean, I don't see Father Brah having issues with Rebecca not being Catholic, but we needed the certificate of completion of pre-marriage course in Spain, friends needed it in Poland, everybody I know who got married in a Catholic church needed it. I'm sure plenty of weddings take place without it, but no matter how easygoing Father Brah is, I think he would use it as an excuse to get them to talk about their issues. And yeah, that seems too sensible for this show, so why not leave it out?