i am so sorry you and your family have to face this diagnosis.
My husband was diagnosed 14 years ago at 57.
Despite huge problems caused by RequipXL he is now on a Sinemet and Azilect regime and his mobility is fine.
He walks with a stick and not long distances , he suffers from depression from time ti time and is a bit forgetful.
But life continues in a near-normal way.
We enjoy holidays, time with family, meals with friends, cinema and theatre trips.
When he was diagnosed we both felt shocked and could not cope with the idea of our ruined future.
But here we are 14 years later still pottering on in a vaguely uptimistic way.
When life has been terrible, particularly in the DA years, I have found great comfort and advice on this forum.
Hopefully you won't face crises but we are always hear to listen and offer a shoulder to cry on and just share our experiences of this soon- to- be-beaten condition!