I had a thought last regarding the finale. For those who don’t know, 3×21 and 3×22 will be aired on the same night, we get two hours of Once. Which is something that has never happened before.
We also know that there will be a wedding this season. Most Oncers have speculated that the likely candidates are rumbelle, but if Rumple is still under the Wicked Witch’s control up through the finale, a wedding between Rumple and Belle is unlikely.
Outlaw Queen wedding is also unlikely since being in Storybrooke, Regina and Robin will only have met previously and get to know each other again.
I suppose Ariel and Eric could get married but they’re very minor characters to build a two-part finale around.
Snowing’s already been married twice. No need to make a big out of a third wedding.
…which brings me to Captain Swan. I feel like, them getting married, depending on the progression on their relationship this season, if they are the ones that get married…it would be a natural next step for them. It’s already been foreshadowed that Emma’s not ready for that kind of commitment but a lot can change in a season. We also know that they continue to be close, so it’s probably not unreasonable to think once Emma makes that declaration of love for Killian, that maybe he asks her the question as well. Emma might hesitate at first but then, push away her fear and say yes. Getting married, exchange of vows, is bigger than TLK’s guys. It’s signed, sealed and delivered. It’s a done deal. TLK between them, if the two part finale goes this way, would be a fun bonus..