"Friday is free (pay your own tab) at a local bar/roadhouse and Saturday is $150/person for 2 drink tickets and appitizers at a upscale bar/tavern with rooftop access."
That is excessive. First off, I have attended all of my reunions. Our 10 year was put on by the class officers, and they said they wouldn't do another. My wife and I took over (we graduated together) and have put on our 20, 25, 30, 35 and 40.
Basically ours follow this pattern:
Friday - a tailgate event at a football game. Finger foods in the school cafeteria and then most go to the game. Also, the last couple the current principal allowed us to wander the halls of the school. It was around $10 per person and didn't include a game ticket. I would say 20-30 from a class of 200 attend. We often go to a local bar after the game.
Saturday - Usually at a hotel in one of their event rooms. We secure special room prices for those interested. We have a DJ, heavy hor d'oeuvres, cash bar and a photographer for a group photo. In 2022 for the 40th this ran $80 per person or $150 per couple. About 40 classmates with about another 30 spouses attended the last one.
Sunday - we no longer do an event on Sunday, but when we were younger and people had younger kids, we would do a family picnic/cookout at a local park.
I see all of the replies about people hating or not going to their reunions. I've never understood that, but I know everyone is different. We have people that have never come and never will. But those that attend, usually come again. Over the years I have created great friendships with people I never associated with in high school, and some friends from school I still talk to weekly or more. Then again, there are friends who I haven't talked to since school They just fall of the map.
The 10 year is the hardest one for people. Everyone still tends to fall into their little groups and it is kind of like high school again.
After that, everyone is an adult, usually married (or had been) and young kids. It's a different type of event. You share common memories with these other adults, you share common life experiences and you form adult friendships.
Now, 40+ most are grandparents, and sadly our table dedicated to classmates that are no longer alive gets bigger every time. We know the numbers will get smaller, and we will probably start going for more casual events. There has even been talk of combining with other classes.
I always encourage people to go to their reunions. I enjoy ours.