Sounds like you're stressed out over this. Don't worry about it. Go talk to whoever you have to, be courteous with them, and work through it. They won't throw you in jail for this.
It depends on your local court as to whether or not you will have to pay in cash. But, I would think that if you take plastic and your checkbook, you will be set to take care of it.
I guess I don't speak for everyone that posts on this site, but I don't think you have to apologize for this post. We're all becoming friends in certain ways. If you can't talk to your friends about these things, who can you talk to?
Relax and good luck,