First, let me state that this is an excellent idea for a business. Now... not so sure that this is a candidate for a minimum viable product. It seems to me it

First, let me state that this is an excellent idea for a business. Now... not so sure that this is a candidate for a minimum viable product. It seems to me it has to be all or nothing. This business by its very nature is going to have to hve a lot of knowledge of each local environment ("The pre-made weddings will be custom designed for particular venues.") Although, now that I think about it you could ditch the venue scheduling and the physical store location. Then you have a web store with different wedding themes and the ability to download a list of plans and purchase some of the items. Perhaps the poster who mentioned working with wedding planners has a point. Market to them initially, they may be able to serve as your window into local pecularities.