Cutting off the feet of people is a big deal, especially if you're trying to frame a full-length pose. A full-length pose needs to have the feet in the shot; a half-body pose does not ned the feet. On the one frame where you cropped into the heads, that is a tight shot, framed horizontally, and on such a shot, it is perfectly normal and reasonable to frame a two-person,horizontal shot tightly enough that the tops of the heads are cropped off; as one shooter said, he might have cropped that shot even *more-tightly*,and I agree with that thought as well.
I'm surprised nobody mentioned what was apparent to me; the outdoor lighting you had on the day of the wedding was very soft and diffused, which leads to soft,low-density shadows. A cloudy-bright or overcast day like that leads to very lovely lighting, that looks almost like studio softbox lighting. Open shade, heavy overcast, or mostly cloudy days are awesome for outdoor shooting that allows you to encompass a white wedding gown and a black tux without even taxing the dynamic range of your sensor!