I'm 83 and I was amazed by how easy it was all the way. After the procedure I was a bit washed out and exhausted but only because I'd worked myself up into a real state, expecting goodness knows what might happen.
The op itself is a bit surreal, your eye is totally aneasthesised and you feel nothing, you don't see any knives, needles or frightening objects - just a series of lights that you're told to look at and the feeling that someone's doing something to your eye but nothing serious. I'm not sure watching videos is helpful, because your take on proceedings sees nothing like this.
You have to be careful for a few days, mainly to avoid infection, but the pain is minimal and apart from not being able to drive life was normal for me. As long as you do as you're told, eg no heavy lifting, things are back to normal.
Your Easter holiday will be brilliant because he'll be able to see in full technicolour.