humidity

I work at a haunted house and am incorporating magic into our queue line this year to entertain guests while they wait to get in. I'm in KY. It's hot and humid as hell. Are there any good plastic cards I could use for these outdoor performances or should I just start buying bricks of bikes to...

Hello! I recently bought a pack of smooth finish cards and I was wondering if humidity affects the cards like it does to a pack of air cushion finish cards? Does it make the cards soggy like air cushion? Also, does the finish "wear off" like air cushion? Will it reach a point where it will no...