Oooh, that sounds cool!
I quite agree about the overpriced, over pressured wedding palaver. NT and I have talked a bit about what we want from our wedding, and have decided two things. First, we want relaxed and informal above all, with everyone comfortable. If this means me in trousers, but my Mum dressed up to the nines*, that's fine. Secondly, I want a three tiered cake of cheese, possibly with a topper of pork pie.
I can't understand spending tens of thousands on a single day. It's the rest of the days afterwards that matter, and should have the effort put into.
I hope your day goes swimmingly! And I say goes with the version of the song that means most to you.
*for my Mum, this will be an immaculate outfit, hand adapted from an incredible charity shop find, probably finished the night before....