Is it a sin to attend the marriage of a Catholic to a non-Catholic?

[Alice_Wonder]

I am a Catholic. My Catholic grandson is planning to marry a Mormon girl probably in her temple. If he does not seek permission from the bishop for a dispensation, will I be committing a mortal sin if I attend his wedding in the Mormon temple?

 

[Reginald_Plum]

Alice,

This link should help you decide if you will attend your grandson’s wedding. If you have any further questions or concerns that are not answered by this link, please contact Catholic Answers directly.

Recommended Reading:
What are the rules for attending weddings?