Don,thanks for taking us along!
My husband has done weddings and baptisms such as you describe. There usually turns out to be some tenuous connection with the church-- someone may have had a distant relative who belonged, and maybe they went there once as a child and always wanted to be hitched there, that sort of thig. Or it turns out to be a handy central location for farflung folks to come to, thus no one gets miffed because Aunt Crabbie wouldn't come because the wedding hadn't been held at her home church in Boofoo.
No Irish bands, but there was one Blues Brothers theme wedding. I didn't know Hardiman then, I'll have to ask about the reception music, but I am sure the wedding rehearsal was a hoot. The wedding party was all tricked out as Blues Brothers, except in white, we have the foto. Sadly this match did not last, I think the bride just couldn't take it!