Just picked up the Joust 12 month card, I can't send texts to those little things so what I did was copy and paste the official text that was posted on the first page, place it in a draft email, open up email with my smartphone, and then showed the cashier. She was a bit older so she asked another guy to come over, dude was saying that he thought I had to print something out, I replied with "There's a code right there, I'm not sure if you all can type codes in or not..." Something along those lines, lady punched in the code and BAM.
Worked like a charm, thanks guys!