I think you can make the Gilda/Blueblood idea work:
Panel 1: Celestia getting Blueblood ready ("You sure about this arranged marriage", that sort of thing)
Panel 2: He steps out, sees Gilda.
Panel 3: Reaction
...Yeah, that's going to be hard to work with. Maybe Blueblood trying to get Rarity to save him from Gilda (still arranged marriage, don't reveal it's Gilda until the last panel) and her response is "Say you're sorry 30 million times and I'll consider it".
Oh right, have a pony:
Spoiler