Maybe it soft opens on the 14th like the Today Cafe did for a while before grand opening, but I don't think it will officially open then without Uni making an announcement. Seeing as we're 3 days away from the 14th and they had a media event yesterday showcasing it, yet refused to give an opening date... I'm not so sure about the 14th. Not to mention construction permits and deadlines could apply to a certain phase of a project, not necessarily the entire thing. It should still be soon, tho. Otherwise they wouldn't have had all that media people there yesterday.
I agree with the exception of the non-existing weddings at Uni. I'm actually going to a wedding there later this year

but yeah, probably not nearly as many Uni weddings as Disney weddings.