I basically agree about the theme - we don't marry a sim more often than we se that sim die of old age - normally just once in a lifetime. I never played weddings in detail (ok, that might be a bit more fun now), and I will definitely not spend a week on a wedding including all those parties on offer with this pack. Still, it's just a gamepack, and when I get it it will be for the world.
That said, regardless of theme I think if we get creative we could play with elements from this pack regularly, even if we play only one household.
- Make a living from arranging and selling bridal bouquets. It requires Season EP to arrange them, but even without that pack they can be bought in catalog and sold for a little extra.
- Run a wedding shop including wedding outfits and all that extra.
- Work as an wedding photographer - might need to imagine this a bit, but you could arrange weddings just to do your photo job. Sim could also hire models to show off wedding dresses etc, and you could decorate your atelier or sell photos at exhibition, etc.
- I don't think it's an actual career, but perhaps your sim could become a wedding planner? Create a studio with demo combinations, invite over a couple who are planning a wedding or to refresh their "yes I do". Combine it with a freelance career for income and something to do "on Mondays".
- Become a wedding singer? ;)
- Start a club that has gatherings on the beaches to collect bottles. For every full collection cheat them §10000 that they can donate to an organization.
- Become a wedding cake baker, sell them from home or open your own bakery (Get To Work).
- Build and run a conference center, including a small wedding venue, but also fan-meetings for celebs, speeches for certain groups, serve food and benefit from the champagne/buffet/speeches/toasts facilities of the MWS pack.
I think the possibilities to enjoy this new pack are endless even if my sims will not get married ;)