Documentary Finale Pitch.3rd time's a charm (feedback included)

Most of their life they've known each other. In total they've spent 24 years in a relationship in which 4 years they dated, 2 years they were engaged and 18 years married with many more years to come. Their background story is like any other plot for a fairytale. She was the girl next door and he was the guy falling for her. you could ask whose fairytale was this his or hers? However soon or later the girl began to feel the same way. They shared each others hopes, dreams and firsts together. You could say match made in haven who spend there lives, living happily ever after.
That's how reality is right 'simple' when it comes to the matters of ones heart?
Trick Question
I wanted to find out what happened between the perfect scenes you know the ones that's scripted out or never written in a book.

Who would I interview?
Mrs Leonora and Mr Harold : They both were born and raised in South Africa. In 2001 they moved to the UK with their 5 year old to peruse Leonora's career in the medical field and to give their family a better chance in life. Now they both have thrived in their careers and have a second child. I could get in contact with them easily as they where my parents, in the interview I would want to keep the story about them before the kids came. To keep the story short and sweet and still have the sense of a fairytale; they never tale you what happens after they ride of into the sunset so why should I?

I could also interview friends and family, to share their insight in how these two make it work and to share some stories that the two might have forgotten.

Also I could interview a range of ages from 6 year olds to teens and to elderly to capture what fair-tales mean to them and if they can happen in everyday life.

Feedback:
The feedback for my 3rd pitch was positive as it is feel good short film, they liked the idea that they would be interviewed separately to see their individuality and if they have the same story or or anything else happened in between. Suggestions I got is I should get archive footage of them in their earlier days as well as the wedding day.