I'm about to undergo that traumatic experience myself next month. We have to drive the 900 miles plus a 24hour ferry home from Spain. Then empty our home in the UK and put it up for sale. Get rid of everything we don't want to keep to charity shops etc, lots of trips to local council tip. Cancel all utilities, move stuff we want to keep into sister in law and aging father in laws homes.
Then make the 900 mile journey back again. I thought all our continental driving was finished with and any other trips could be in the comfort of an aircraft- I wonder why we adopted our 5 month old puppy sometimes, but being an animal lover didn't want to see her disposed of in a dustbin as the Spanish are quite happy to do!