There were, once upon a time, seat locations given to high-level donors. The families have to pay market rate for these seats but there's no risk of being bumped (unless you don't pay for the seats) until 2 owners / generations have passed away.
Now the system is cougar club / legacy donations. No one has "family reserved" seats that stay with the family through generations because it's all based on point priority in cougar club on an annual basis.
From my perspective, I'm very glad the AD made this switch because the new system sounds waaaay more fair.