Is it a Slavic wedding? Also, will you have to face any "When are you gonna get married?" stuff?
If it's a Slavic wedding he will have to face gallons of vodka, tons of meat, hours of non-stop dancing with pretty girls with a dark thought "dead end - my family now", incomprehensibly drunken uncles doing things after which he would have to wash his brain with a flamethrower, his aunts trying to stop their husbands from excesive drinking and ending under the table, random wacko guests from the street, presumably a random fight for "family honour", a police intervention, drunken policemen dancing and flirting with pretty girls that are technically his family, a guest sitting in front of him trying to become his "spiritual father", his cousins trying to make a campfire at a local orchard and end up with a wildfire, an intervention from firemen, his grandpa trying to calm firemen with a story of him burning to the ground local Gestapo outpost, drunken firemen dancing and flirting with pretty girls that are techincally his family, finding a single and beautiful wedding guest that's not connected to him with ties of blood/family, starting to flirt with her, his grandma ending the conversation telling about the biggest poo he did as a baby, his father trying to save the flirt with trying to drive his grandma home, despite being absolutely drunk, his mother telling young-couple to be careful in bed, her brother telling a joke about it and making him wonder why does this happen, and ultimately going to the state of unconsciousness, waking up the next morning, remembering neither the whole night, nor how he end up lying all wet in a shower with his high school budies and his dog covered up in soap bubbles and lipstick near his butt - IF he'll be lucky and be able to drink enough, thus saving his psyche.
"When are you gonna get married" is the least of his problems.