Complex sentence: Although the capacity has more than doubled since Lambeau Field was opened, demand for tickets remains high: season tickets have been sold out since 1960, and more than 81,000 names remain on the waiting list (with a reported average wait time of 30 years).
Split into simpler sentences: Although the capacity has more than doubled since Lambeau Field was opened, demand for tickets remains high. The Packers have sold out every game since 1960, and more than 81,000 names remain on the waiting list (with a reported average wait time of 30 years).