We are having our 55th in September. We have about 25 or 30 at a once a month lunch so it is not as harrowing as some might think.
The most amazing part of our 50th was that the where abouts of all but 11 was known. Counting those 11 as dead, a full 80 % are still kicking around. That statistic no longer holds for the 55th but at 73, we are in remarkably healthy, good shape.
i’ve got my 50th next weekend ... the organizers invited the class before ours and the one after as well ... they did that for our 40th too