My general plan for weddings is to simply swap in digital for where I used to shoot 35mm (The fun and spontaneous stuff, mostly) and do much of the rest in medium format. For something that can be kept regardless of what computer-makers do.
Personally, I'm just not intending to do mainstream weddings anymore, anyway, except by special request or as a gift, Half the job of a wedding photog is to absorb about at least about half of your employers' stress, and I ran out of sympathy for a lot of it ten years ago. ) )
Anyway, what this means is, if you're doing this cause of requests, they're requesting *you.* You shoot as much or as little film as you see fit. If they went to a for-profit business, they'd pay out the nose for a single frame of film. If they could have it at all.
You know what I mean? If they're asking for *you,* give them *you.*
The 'wedding industry' is kind of based on cynicism and playing on a lot of expectations. (People will spend twenty grand to have a *really bad time* and then, toss a coin: the odds of it coming up tails is the odds of them expecting you to turn it all magical for the ages after nickel-and-dimeing the couple hundred you might clear if nothing goes wrong for you: they don't know what they want, they just spent fifteen hundred bucks on table centerpieces, and you're the last one to be paid.
)
If your clients come to you, you can do it *your* way, or at least in a way you're willing to accommodate... Do your best work, however your best work is done, do it with heart, ask a price that's fair for all concerned.
That's the only way to love it, and thus the only way to do it at your best.