If this managed similar like the Women's College Cup Final Four in Kennesaw GA this past weekend, you should buy your ticket in advance online. Otherwise you get there and they will tell you "Sorry, we are sold out" although you'll see 50% empty seats.
Apparently, they sold all seats only once, although the fans of the 2nd game were not attending the first game and vice versa. Very frustrating to see hundreds of youths turned away who were in town for their Nike Cup tournament the same weekend.