Yes, we have kept our wills updated, ever since our children were babies. When we travelled around the world 11 years ago for 6 months, we gave our children power of attorney just in case (and were actually involved in a potentially fatal traffic accident while away, so it could have been needed). We have left that in place.
While doing a bereavement course, we had to consider our own mortality and funerals and discuss it with our families, which actually was lovely, not morbid. It led to discussing how much we loved each other, saying those things that you which you had said after someone dies. And it was great fun discussing what music you want played at your funeral.
My Dad has purchased a funeral plan for himself, so that neither myself or my Mum have so much to do. If my Mum dies, he feels he would be able to cope with arrangements.