Stadium parking question

Don't know if this is the right place to ask, if not I apologize in advance.

In town for the Falcons game this weekend. I have read that parking is handled "cashless/credit onky/digital/etc" now, does anyone know how it works? Can I still pay when I pull up with a credit card or do I need to buy parking in advance?

Also, I'm a little disappointed in the lack of local buccaneers merch. Was hoping to get something that can only be bought in the Tampa area, not something that can be ordered online from multiple sites. Even the team store just has things that can be ordered online.