There is no harm in being prepared. These two are due to be married next year, but they’re getting their engagement pictures now in preparation for the event. This gives them plenty of time to work with someone to get the announcements just right, prints ready for the reception, or whatever else they could use these for. It was early in the morning and cold but they were ready and willing to do whatever it took to get the great images.
Congratulations on the engagement, and best wishes on the wedding.