Okay, how are we feeling on BobaHan drunk Vegas wedding
So, the thing about a HanBoba drunk Space Vegas wedding is that it's totally feasible. Sure, they'll try and kill each other if left alone in a room together (or even if they're not alone), but that's easily remedied by getting them drunk. Give 'em both a few drinks, and then a few more, and Han's grumpy sarcastic exterior will melt off to reveal a ridiculously soft marshmallow-like interior, just as Boba's grumpy taciturn exterior will melt off to reveal an equally grumpy, equally taciturn interior, but this time without the seething, venomous hatred he bears for Han.
(This is the point at which they inevitably make out, at which point they also inevitably decide to get married— because, like, reparations, or the joy of being alive after a sarlaac/carbonite or something. They're drunk. Don't expect it to make sense.)
So the wedding goes swimmingly. They buy rings from a convenient space roadside vendor, get married by another convenient space roadside vendor, spend an egregious amount of money on a space hotel room because both of them forgot where theirs were. They then fall asleep.
The problem is the divorce.
Because, look— they are very, very drunk when they get married. (They have to be, otherwise they'd be trying to kill each other, Han via sarcasm and Boba via weapons.) They are, in fact, blackout drunk. So when they wake up on the first day of a three day hangover, they don't remember anything.
All they know is this: everything hurts and they're dying, they woke up next to that dick who shoved them into a sarlaac/froze them in carbonite, and they each have a very cheap looking wedding ring on.
Really, all they've got to do is find out if they signed anything last night that would make it legal. Unfortunately, that would require them to be fully capable of moving without vomiting, which they are not.
Five hours later, they are capable of moving without committing various vomit-related crimes against the carpeting, but as they are once again not drunk, they have no intention of being the slightest bit friendly with the other person. It does, of course, devolve into a fistfight.
Han leaves Space Vegas with a black eye and without ever checking to see if they were actually, legally married. Two years later, as he attempts to sign the papers with Leia, he has a very rude awakening.