IMO, brides are entitled to their personal religious and social views, even if you don't agree with them. The bride this week wasn't espousing any views on the program -- what she believes (or doesn't believe) is her business.
I thought bringing the kids was something like a Brady Bunch gimmick. Though I wasn't a fan, in the end, the kids were well-behaved and actually more likeable than most of the entourages on this show. Whatever the reasons the family had for doing the show were off-screen, so I wasn't bothered.
The UK version is much more "normal." Small groups, modestly-priced dresses, minimal drama. However, as I said above, I don't think that would sell as a TV show on its own week-to-week. Thus, on the Kleinfeld version, we get the (mostly) outlandish brides, most of whom have something about them that the producers think we'll find interesting -- not necessarily likeable, but interesting. That's reality TV.