I haven't shot weddings in decades, but something which most of my clients said then was 'I want something DIFFERENT'.(posted 8747 days ago)I was doing a mostly journalistic approach--record the events of the day, telling the story of the event--with some added semi-formals. Finding out what they meant by 'different' was critical were I to provide what they wanted.
Almost all of them wanted the same "different" things, And most of them were fairly traditional kinds of things.
Fashion images are dated in 2 ways: the clothing and makeup of the subject, and the styles of photography. Someone in that field can probably narrow down a shot within a few years even if there's no human in it just from the style of the image.
Wedding images aren't supposed to be so dated. The trade-off is that the styles move much more slowly.
Check with the photographers in your area. Find out two things: what are their customers ASKING for before they buy; and what to they ACTUALLY BUY. You will probably find out that they're very different things.