"He doesn't force the church after the wedding." -> Rather than believe this, I believe in Kim Jong Un's promise to dedicate the whole of North Korea to South Korea. If you hold this one, then the hell door opens! The church wedding is a pledge to all the guests, "We will dedicate our allegiance to Christianity!" I'm sure your in-laws will ask you to go to church on this occasion. The minister will surely announce in his officiant that your couple are in the arms of Christianity, and his parents-in-law will go wild, saying, "What will our faces be if we don't go to church after taking vows to God and everyone?"!!!!
No! No! Apart from everything else! The church wedding itself is "a ceremony in which your couple vows to be the offspring of God"!!!!!!!!!!!!!!!!!!!!!!!
If we don't agree, don't get married! Just report your marriage!!!!!! Take a chance later and replace it with a party with just a few of your friends!!!