I understand your problems but some sworn to "Serve and Protect" have no more interest in your problems than how long it's going to take to get rid of you. No offense to any officers out there that actually DO care, you know who you are.
I haven't been to a show in several years, the last one tried to get me to check my legally carried, concealed sidearm before I was able to enter. I refused, turned around and drove the 70 miles back home. I decided it wasn't worth the time of effort to scrounge through the piles of surplus crap I could see from the door.
As to credit cards, I stopped using those about ten years ago.