Tanse still has a very archaic patriarchal culture and strong pagan roots, so I think their ideals when it comes to marriage are definitely different from Xehana's. I wish we had more information on both countries because all I have are headcanons lol, but I think Tansean weddings might generally be held outdoors vs inside a church, maybe involve several days of various traditional ceremonies or celebrations both before and after the wedding itself, stag parties, etc. as well as various offerings to whatever gods the couple/their families worship. Luis makes it sound like Tanse doesn't have a cohesive pantheon but probably more like regional deities, so wedding traditions my vary a lot depending on the region