I'd go ahead and get the letter. It shows you were a great employee at one time.
But I'd also, as recommended, find other opportunities to stay current. Perhaps you can volunteer in a similar setting. If you were a lawyer, for example, you might be able to volunteer a few hours a week to a local legal aid society, which would keep you in the loop. If you were a secretary, you might volunteer with any organization, and keep computer skills if not current, at least not completely outdated. Similar to marketing; can you imagine coming back NOW, after having been out for ten years, and not knowing a thing about social media?
You might also find it's not ten years, but five years or seven years, depending on how you space it and if there are any multiples in your future.
And when you make that future resume, you can leave off the chaffeur skills, but you might add in scheduler; co-ordinating multiple kids whatever ages is a handful.
Also, look into continuing education credits, on your own time, again to stay current.
DISCLAIMER: I am not the Resume Expert. Further, all communications bearing my handle are my personal views and thoughts and do not reflect my employer or any official communication of my employer.