Originally Posted by Rabbiyah
I've read Ibn Batutta travel story long time ago that when he went to Constantinople (if I'm not mistaken) he went to Hagia Sofia, the priests invite him to go inside, but he refused because he has to bow down as mark of respect to the Jesus statue.
Palestinian Muslim clerics and leaders attended Christmas eve mass in Church of Nativity.
I've seen Allahyarham Ahmad Deedat having debate in a Swedish church.
Conclusion: as long as you dont commit shirk inside a church, i think it should be ok just attanding a wedding there.