Oh dearie dearie me. If you were in the midst of pre-wedding chaos- overflowing (a word well chosen) with guests and lots of food and innumerable cups of tea... what would be the most unsuitable disaster you could have happen?
Yes, it is indeed the overflowing septic tank.
Let joy (and festoons of loo-paper) be unbounded.
I hope we'll look back on it all and laugh.