I used the S1 lot several times with the Dad in the past. I would suggest that you arrive early and do some tailgating before the game. Many of the people in S1 are tailgating. It is low key and everyone is very friendly. Even if there are spots open closer to game time, it is a challenge driving through the lot with all the tailgates set up. Things are pretty tight. I don't recall that we had to be their super early, but I wouldn't suggest showing up an hour before game time. I don't recall exactly, but it seems like we showed up a couple hours before kick. My Dad and I would typically back a couple chairs, some drinks and some snacks/sandwiches.
Maybe go earlier the first time and then you can see how early you need to be there for future games.