So, if you think you have an awkward family situation around your wedding, consider my nephew's, which we're supposed to attend on August 8:
* The bride's parents are devout Muslims who live in Malaysia. They will not recognize her as married unless they have a Muslim ceremony.
* If the bride should convert to any religion other than Muslim, or get married without a Muslim ceremony, she could be prosecuted criminally if she ever returned to Malaysia.
* A Muslim ceremony is not possible without both parties being Muslim. Thus, my nephew has at least nominally converted to being Muslim.
* The groom's parents (my sister and her husband) are devout Catholics who live in Mexico. While my sister is pretty tolerant, her husband acts as though every religion other than Catholicism is an invention of Satan. He is totally appalled by his son's conversion and by the Muslim wedding.
(continued in comments)