You know I always have a hard time imagining Reinako getting married/having a wedding, but I can definitely see them as the sort to go to Vegas or wherever, wake up hitched, and decide, eh, might as well stay married.
There is a video, because of course they can’t get married by an Elvis impersonator without someone (our enthusiastic and very drunk Haruka probably) recording it on their shitty phone camera. Mina is ECSTATIC to see that the amount of alcohol she’d consumed did not hinder her ability to seize the circumstances and have her wedding vows to Rei be “You’re my hunk of burning love”
(Rei is too busy being mortified that her own drunken vows contained some REAL EMOTION AND FEELINGS to be appropriately mad)