We're having a humanist ceremony (which are legally recognised in Norway) and were shocked at how strict they are - NO religious symbolism whatsoever. Every text to be read and piece of music to be performed has to be approved by a central office. Apparently another couple wanted Amazing Grace (just instrumental) and were turned down. A friend who's a musician said this sounded as bad as the church, which often bans secular music - but that musicians know ways around it. You want Ave Maria, you call it an aria by [composer name], or opus 24 or something like that - I don't remember the details of that piece, but you get the idea, you can describe it correctly but in a way the fascists won't recognise. That won't help with wedding vows though, or with poetry. I hope you find a way around this stupid rule!