Drive up to the school and the Fathers Club (Yellow Jackets) will guide you. There is the main lot, then there is a grass lot across from it. They also use the Metra and Church lot in Dorchester. They have plenty of Fathers Club and off duty officers in and around the lots during the game.
Not sure when the gates open but I got there around 12:15 last week and got a spot in the main lot, but that crowd was from Glenbard so they were in uncharted territory.
Stadium seats about 2,500. They’ve hosted teams that travel well like Loyola and Rice and capacity hasn’t been a big problem.
Enjoy Barda Dowling Stadium