The reason it got rejected was because Anne chose a picture of a same sex couple in her ad.
She wrote a letter to the editors and posted it on her blog (here) and this post went a bit viral and I wanted to write about it, and now that I have time to do that, I found that there’s an update!
Weddings Unveiled apologised on their blog (here) and will publish the advertisement after all. Jolly good.
I was surprised to read in the comments that people thought the picture was selected because of shock value.