Can you park in Lot B and pay there or do you need to get a pass?

You definitely need a pass. There many other parking options not too far away. Some churches sell parking spots and it's a short walk to the game.

I'm pretty sure on Lot B you need a parking pass to park there.

There are many independent parking lots available within a 3-10 minute walk. They're prices vary depending on location, security and distance from stadium. Hope this helps!