The structure that makes every good wedding toast work
Every great wedding toast follows the same arc, whether the speaker knows it or not: establish your relationship (who you are and why you're standing there), tell one story that reveals the person's character, pivot to the couple together, and end with a sincere wish. The funny-first, heartfelt-second structure in this prompt mirrors that arc exactly. The humor relaxes the room; the sincerity at the end is what makes people tear up. Both need to be there.
The 'no embarrassing revelations' instruction
This is not a joke. Wedding toasts go wrong most often when the speaker includes something that was funny to their friend group but deeply uncomfortable for a room full of grandparents, work colleagues, and people meeting for the first time. The AI won't generate anything inappropriate, but the instruction also signals that any real details you share in the prompt should be the shareable kind — stories that make the subject look charming or lovable, not ones that require everyone present to pretend they didn't hear.