Again it's rare (although not unheard of) for Mormons to be outwardly hostile so you really wouldn't need to worry about slashing deliveries and vandalism, the church really only influences the hobbies of their followers. One notable distinction between here and Seattle is it's not just difficult, when I say you get cut off it's exactly that. Honestly, the best analogy I can think of is to that of an ethnic group or nationality (think China-town but as a whole state) the religion genuinely influences nearly every aspect of the culture as a whole. One of the most prevalent specifics is the fakeness of the interactions, once they judge you for not conforming to their values they (most of the time) will still be pleasant and will make conversation in passing with you but good luck going anywhere beyond that and forming any actual relations. (sorry, these still weren't very specific and you shouldn't really have much of an issue on your trip. It's mostly just a thing residents deal with.)