Another plot twist could be that an ancient Asgardian law is revealed which states that Thor, as a prince, can't marry a mortal. This would lead to a lot of internal conflict for Thor, as he has to choose between his love for Jane and his duties to Asgard. Jane, on the other hand, might try to find a way to prove herself worthy or to change the law.
It could be that the marriage is part of a bigger plan to save the universe. The gods or some powerful entities have foreseen that only the union of Loki and Jane can bring about a certain balance. But Loki and Jane are initially unaware of this and have to figure it out as they navigate their new married life.
A possible plot twist is that Betty and Jughead get married in a hurry, and then they realize they don't really know each other as well as they thought. Maybe they start to have major differences in their life goals after the wedding. For instance, Jughead wants to focus on his writing career and travel for inspiration, while Betty wants to stay in Riverdale and start a family right away. Also, a jealous ex - lover of either Betty or Jughead could show up at the wedding and claim that one of them still has feelings for them, which would throw their relationship into turmoil.
Well, it could be that on the day of the wedding, a major political scandal breaks out involving one of their closest friends or allies. This would force Olivia and Fitz to decide whether to postpone the wedding and deal with the scandal or go ahead with it and risk being associated with the mess. Also, there could be a situation where an old flame of Fitz's returns and tries to win him back, causing Olivia to have doubts about their relationship.
One interesting plot twist could be that Gohan discovers a new power right before the wedding that he has to quickly learn to control. It might put a strain on their relationship as he has to spend time away from Videl to master it.
One interesting plot twist could be that on their wedding day, an old enemy resurfaces and tries to stop the ceremony. Maybe this enemy has a long - held grudge against either Lucy or Rogue. Another twist could be that one of them suddenly loses their magic powers right before the wedding, which causes a great deal of internal conflict and worry about whether they are still worthy of being together. Or perhaps a mysterious prophecy is revealed that says their union will bring either great good or great harm to the magical world, making them question if they should go through with it.
One possible plot twist could be that on their wedding day, an old acquaintance from their past shows up with a secret that could potentially change their relationship. For example, it could be someone who knew Lucas in a different way and reveals something that makes Maya question their relationship.
One possible plot twist could be that just before the wedding, Maya discovers a long - lost relative who has a big secret that could change her life. For example, the relative might be involved in some sort of mystery or have a connection to a large inheritance. Another twist could be that Farkle gets an amazing job offer in a far - away place right before the wedding. This would force them to decide whether to postpone the wedding and move, or stay and let Farkle pass up on the opportunity. A third plot twist could be that an old enemy from their past resurfaces and tries to stop the wedding for some personal vendetta.
One interesting plot twist could be that just before the wedding, Percy discovers a long - lost relative who shows up and reveals a family secret that shakes Percy's world. But he decides to still go through with the wedding, showing his commitment to Sally. Another could be that during the ceremony, a sudden storm hits, but instead of ruining the mood, it makes the moment even more special as they see it as a sign of the power of their love. And a third twist could be that Sally's ex - partner shows up at the wedding, but Sally firmly tells them that Percy is the one she wants to be with, strengthening their bond.
One interesting plot twist could be that just before the wedding, a long - lost relative of Emily shows up and reveals a family secret that makes Emily question if she should go through with it. For example, it could be a family curse related to marriage.
One possible plot twist could be that Sakura discovers Kakashi has a secret past she never knew about. Maybe he was involved in some kind of dangerous mission long ago that has consequences in the present. This could put a strain on their relationship as she tries to come to terms with this new information.