One of the slightly random tasks that we've done in the last two weeks has been to choose the hymns for our ceremony. We reverted to our usually planning style - I wrote a short list (with the help of my dad) and then Gadget picked them. So we're having "I vow to thee my country" and "One more step along the world I go."
Whilst these both have some significance to us, we've mainly picked them because we like them. Your church wedding has an area where you can listen to the most popular wedding hymns - our second hymn is actually on the list, but our first is not. This isn't an area where I feel the need to be "different." I quite like singing hymns, so I've picked ones I like singing. Once again, an easy decision. As long as the vicar approves!