Ideas to include
Twenty five years in chapters
The broke start, the first house, the children arriving, the careers that turned. Give us four or five real chapters and the song moves through them like a story.
The children, now grown
At twenty five years, the kids are old enough to give the gift themselves. Their names and what the marriage taught them make the verse everyone remembers.
What held it together
The year it was hard and the thing that got you through. Silver is the anniversary where honesty beats sentiment, because everyone in the room already knows.