We have done the same and update it about every 3 months as things relative to our portfolios change. All 3 sons have copies of our wills, DNR paperwork, signature cards filled out at the bank where we have a safe deposit box. Pre paid burial expenses another item we thought was needed.
With everything in place, the law office set to process the wills, no probate will be needed. Clean, easy no grief for them to try to figure out the legal requirements, & asset distribution.
Just like presents for the grandkids came in the form of buying stock for them in a dividend paying guardian account made it possible to show no preference. Supplying them now with knowledge of what to expect when we are gone should eliminate what is so often in the news, siblings fighting over whatever their parents left.