I lived and worked in Kentucky for nine years, and I have a great deal of respect for Kentuckians. Mostly I heard “big ole” used humorously, so I wouldn’t call it “authentic.”

And “new digs” sounds like tired slang from the 1970s. That’s fine if the ambassadors are supposed to be people in their 50s, but Internet users in their 20s have posted some critical comments about outdated slang on some of the sites I’ve been to. As an editor, I would recommend dropping the pseudo-country dialect and the slang, and just writing casually but directly. Maker’s Mark is a great product. They don’t need to fake cuteness to promote their bourbon.