There was a great story on All Things Considered on my way home from work. A couple of nuggets from it:
Tickets went on sale in the spring. They sold 81,000 in the first three days.
Nebraska has sold out 300 straight matches. The journalist made sure to add, "in an arena that only holds 8000". Many decent DI basketball teams don't sell out consistently in arenas smaller than that. Nebraska has been a top-ten team most years for many years. They've created a great atmosphere that the community wants to support.
In the late-80's or early 90's, the UVa WBB team set out to set a record for attendance at a women's basketball game. They did that in a game against Maryland. They drew something like 13,000 fans. This was in an arena that held around 9000, and the fire marshal wasn't pleased.