Not totally sure but there were people with lawn chairs, blankets and nothing sitting on the lawns. I believe it is first come chooses where they sit.
You buy a general admission ticket (no seat assignment) and set up your spot with a blanket. Saves you a few bucks, but you have to sit on the ground.
Can get crowded for Sunday day games when weather is nice. Just keep an eye out on your kids because foul balls do land there.
Get quick answers from Fluor Field at the WestEnd staff and past visitors.