You should go to the reunion. If you don't, you will always wonder what you missed. If you go and don't like it, well, at least you'll know for sure.
Remember the famous saying, "The follies a man regrets most, in his life, are those not taken, when he had the opportunity"
I just attended my high school class' 35th anniversary reunion, on May 20. In fact I was the Organizer! It was great! About a hundred people came, and we were all really happy to see each other again after all those years. Some people, who didn't know each other 35 years ago, became friends at the reunion. Many of us will continue the reconnections we made that night. Everybody was very friendly and enthusiastic, and everybody had a great time and a great story to tell. Careers ranged from US Congressman (Jerry Nadler) to sheep shearer!
I billed the reunion as a fundraiser, and we raised nearly $10,000, for a welfare fund, to help needy students in the school. We also set up an email list, of about two hundred of the total four hundred people I have on our mailing list, (it was a class of 746), and people have been sending me their autobiographies, to be printed, bound into a book and sold to our classmates, to raise more money for the Fund.
Stuyvesant High School, in NYC, was a special place, and many of our (all boys back then) classmates have stronger bonds with StuyHigh than with their colleges. I'll brag a little. StuyHigh is a special, entrance exam high school, in the NYC public school system, that specializes in science and math. It has the highest academic standards and levels of achievement of any high school in North America. I'm very proud to have gone there. I was Vice President of our Alumni Association, from 1985 to 1998.
Most everybody matures a little in 35 years, and old gripes are long forgotten by now.