The closest thing we've had to a family reunion was my mom's 80th birthday. All 7 of her children were there, and 12 of her grandchildren and 2 great grandchildren, as well as various cousins and friends.That includes all the older generation (like my grandma and her brothers), and then their kids, and their kids' kids, etc., etc.
Like, my grandma had 7 kids, and together they had 11 grandchildren.
I see them a lot more than the other cousins.
Out of my grandma's immediate family, all of her 7 children were there, and 7 of the 11 grandchildren.