They don't have 64,000 season ticket holders now. They have 64,000 season tickets held by 25-30,000 holders.
They will probably sell any unsold seats. That's what they did at the Meadowlands.
30 years line seats in the lower bowl are considered premium seating.
@Kirby Jackson explained this years ago. Building a new stadium allows teams to recalibrate seat prices. Those 30 yd line seats were just seats in 1972 when Rich Stadium first opened. Today those are clubs.