You can see the intro by searching for this arrangement at the Harp Connection website – it is definitely a pedal harp intro. I don’t know this arrangement, so I don’t know what else lies in store, but the accidentals in the original version aren’t very difficult to accommodate on lever harp, I imagine. (I don’t play the tune, but a quick listen, it sounds like you’ll flip a C to sharp for the occasional A major chord and back again. The bridge might involve another borrowed chord, too.)