I love this as well.. I rarely look at the people forum, but saw it on the front page and just had to click on it.
Your meticulous effort to recreate the past in the present has resulted in an amazing image that will be a timeless memory for you and your parents.
As a 71 year old married 51 years I really relate to your great photo. I don't know if you have siblings but make sure all family members get prints. In a very short time it will mean so much to them.