I always arrive early to Kezar, so there’s only ever 1–2 people in front of me when I enter the stadium.
I somewhat agree with Jack’s comment about the food lines and speedy crew. One time I ordered, it only took about a minute to get my food. Another time, it took a good 5 minutes to get my food, but that was during one of the earlier home matches. So, I assume the crew has gotten used to the environment and are speedier with the whole process.