I had 9ers season tickets for twenty years some of the best times of my life.
Opening the first beer of the day at 8:30 am now that is football to me.
Go early tailgate and roam the parking lot and ask fellow tailgaters if they have any tickets for sale.
Always worked for friends that came to the park with us but no tickets and I would cruise the parking lot with them asking.
Trust me it works,but this early in the season makes it harder usually the Sun or Mon nights were way easy.
i'm looking at sept 20 (MNF) when they host the saints
I could tell you how to get out of the parking after the game but you would not understand.
Nut shell you go opposite direction of ghetto and stay as far to left as you can and follow the I280 signs.
Where are you staying?
What town.