The 360 GA line was at the north end of the stadium. They said parking lots and lines wouldn't be open/allowed until later, but lots were open when I showed up (8 or 9am) and the line had a few hundred in it already. Around 3pm, I came back from my car to find the GA line dashing forward into a blob. I skipped the porta-potty, took my best guess for where I belonged, and dove in.
Showing up by 5pm was plenty early enough on Wednesday to get a good floor spot, but that wasn't on a weekend.