Not a cuckold wedding, but a couple we often swung with at the swing club and at their home got married at the swing club (we'd moved away) and over 20 men fucked the bride (with condoms) after the ceremony.
This might not be your idea of a cuckold wedding, but if I remarried, I have a fantasy where my bride would come down the aisle with another man’s cum running down her thighs (she fucked him in her wedding dress just because she liked the naughtiness). As I kiss my new bride, the scent of the other man’s cum is in her mouth and on her face. When I remove the garter, I'm surprised to find it’s wet with the other man’s cum and her thighs are gleaming with his seed.
Also, at the reception, without telling me, she sneaks off with one or more guests to “consummate” the marriage with adultery before I fuck her. Or maybe, we fly off to our honeymoon hotel resort, and she dances with other men, and tells me to go up to the room and she’ll be up soon. After two hours, I go back down and she’s not in the bar. She returns the next afternoon, well-fucked and full of cum, having spent our wedding night with a stranger.
I love the idea of being cuckolded on my honeymoon, and another man being the first to have her after the ceremony, and on the wedding night while I wait and jerk off. When I get my chance the next day, she refuses me, saying she's too sore, and telling me how much better the other man fucked her. That night, she cuckolds me again, and all I've done since the ceremony is kiss her mouth that's sucked off other men, and licked her cummy pussy and thighs, and watched her dress sexy to cruise the bar at the honeymoon resort for a stranger's cock as she talked about how she'd let him do anything he wanted, bareback only.
I'd want others to know what she's doing on our honeymoon, her friends, my friends, the hotel staff. I'd want it to be strangers between her legs, and have her take them bareback, always shooting their cum into her unprotected, fertile pussy, or into her mouth. She makes me lick her out, and on the rare occasions she lets me fuck her, I must use a rubber.
She'd take men to the honeymoon suite, slowly closing the door in my face as she looks into my eyes, locking me out, and I'd have to get another room. When I'd see her next, she's naked and she kisses me deeply, then asks if I can taste his ass on her tongue, which she stuck up the stranger's butt. She'd never do that for me, nor give me a blow job, but she makes me lick cum from her pussy and her ass and lick it off her face and body. I never get to fuck her ass.