I've NC for this.
DP and I have been living together for years, no shared children, we are in our 50's and 60's, and we are very happy as we are, balanced with assets and finances and share all that we have. I'm approaching early retirement, he's already retired.
We really ought to get married/ enter into civil partnership to protect our finances, we have wills but we will be exposed to inheritance tax in the event one of us dies.
Getting married with our families in attendance will be a logistical nightmare working around close family members who live overseas and are tied to school holidays, ditto UK relatives who live at the other end of the country and are tied to often different school holidays. My family is huge and we'd usually invite everyone.
It would be 2027 at the earliest before we could even get the close familes together and having already had a cancer diagnosis (me) a few years ago that worries both of us.
We tempted with getting married and telling absolutely nobody. It is literally just to fix the financial position, we don't feel the need to be married. I wouldn't change my name regardless.
We might, possibly have a blessing or similar in the future so the grandchildren can be bridesmaids/ pages and we could tell everyone then.
Has anyone done this? How bad would this be? We know that to work we would have to tell no-one!