Well, a quick update. My 20 year reunion was the weekend just gone. It didn't start well as I had car trouble half way home, which turned a 7 hour trip into a 12 hour one, completed in a hire car, but it was
definitely worth going. I'm well aware that I won't contact 99.9% of people I saw there, but that is not the point.
Surprises for me were
- the number of people who have returned to live in the home town
- the amount of people who were generally happy to see everyone else
The Friday night drinks were in a bar that is run by one of the girls from my year, so there was no real chance of being booted out

+ most people after the Saturday night dinner ended up back there as well (well planned as the restaurant we ate at was literally 5 minutes walk from the Pub.
The walk through the school was weird - so much has changed to the layout of the school in 20 years - almost easier to point out things that are the same!
I had a long chat with a girl I have seen quite a lot after school (she is one that now lives back in the home town). I had a nice chat to the girl I took to the year 12 formal (the prom) and I got a private chuckle out of the people who got fat and have less hair
For me this also doubled as a chance to see my grandmothers, one of whom is getting pretty close to the end (97 next month).
And the car? Met my wife's parents in the town where it was towed after breaking down and towed it home. Fingers crossed it doesn't cost me a bomb to fix it
In summary - if you get the chance - GO! even if you are only going to see people for one night. 20 year was much more interesting than 10 (as people have done so much more).