8 days ago the hard drive on my MacBook Pro died. It was 2 and half years old. Fortunately, I had Time Machine backups and had purchased the Apple Care Protection plan which lasts 3 years. I had not got around to registering it and so had to. This all went pretty smoothly. An Apple technician came and picked up the computer, repaired it, and returned. This took 8 days, but there was a 2 day delay because I had to get the registration done and approved.
The Time Machine backup worked beautifully.
This is a lot better experience than I ever had with PCs that died. Repair always took much much longer and restoration of backup was much messier.