So the strategy may be to ambush parents while they are posing for the formal photos with their son. Jump on them as soon as they are done. Find some nice and quiet spot. If you are in parents’ house, see if you can do it outside, on the front. If you prefer to do it inside, check if there is black and white wedding photo of mom and dad hung somewhere. Use it for the background.
Give mom and dad some time to put their thoughts together, then frame and roll.