I have tried several times now to get married, but when it comes to the day, I walk into the temple, and...... Not A Damn Thing. Everyone shows up, but nothing happens. I try talking to people and they just repeat all the soundbites and no wedding. (I have the 360 version btw.)

try waiting in there for 12 (in game) hours. Sometimes it takes a while. i think i ended up waiting 2x 12 hours before the ceremony started.

Nope, sat there for 12 hrs in game and it promptly told me I "failed" despite being right there. Just yet another of the bugs in the game.