My FIL just passed at 96, leaving behind a 95 year old widow. He was an incredible man, so involved in everything until he passed, wake and funeral were full. He met his second wife through the Catholic Church (both were widowed and were married to each other 40 years). My entire family on my mom’s side lived in Jersey City, my grandmother was the last (all Irish). We have in town Irish and Italian clubs here, plus the Italians seem to join the Elks while the Irish seem to prefer the knights of Columbus. I think if your dad was in assisted living he’d have a very active social life!
Your FIL sounds like mine . He's so active now, it's hard to imagine him being *more* social in an assisted living community. He's still driving, grocery shops, cooks for himself, golfs...etc. He just got over a bout with Covid...spent five days at home and then back to his bowling league championship game...lol!