Isn't it funny, at reunions, how you first see someone and you think, "Wow, they look so different!" Then five minutes later they're exactly the same as they were in high school? The bond, the love, strips away the surface changes, so you can see what really matters is still the same.
For the record, I went to a prep school with about 60 people in my graduating class, so yes, I was friendly with a majority of the people I graduated with. Makes reunions less angsty, I think.
If anything, even if we've gained weight/lost weight/have a few wrinkles/less pimples/more grays or whatever, the people we were have been honed a little by life, and are even more dimensional and complex people than we were.
I had a blast. I love my friends.
May more people come home for the 20th!