Good for you Neil.....at 68 (and having worked for so long) I think retirement should be 'staring you in the face' not just 'in sight'.
Mark B makes a valid point about savings and spending.....having saved money on a regular basis all my life I still haven't got my head around the idea that I can now spend it without feeling guilty and still worry about spending capital that I know will take a lot longer to replace than when I was working. But as SWMBO says 'What on earth did you save it for, if not to spend it at some stage?'. A valid point perhaps but old dogs find new tricks a bit of a challenge....
The good news is that you already know how you can occupy more free time....enjoy!
Exactly the emotion I went through after stopping work, I had just bought a new +4 4 seat and after a year stopped work. From that point it sat in the garage largely unused as I felt guilty spending 'our' savings on myself for days out in the car.....then I felt guilty have all that cash tied up in something unused so I sold it. Terrible decision, Mogless for 9 months, then my father died and while not exactly a condition of his will left a note saying 'tell that miserable Bugger to stop moping about and buy another Morgan'....my sister and brother loved that, so typical of the old chap, so I bought the current +4 and enjoy every second with it. Even our kids say it's your savings you should not be planning to pass it on to us.