I tried taking one out yesterday with my free pass, except that it never actually gave me the code to take one. It took all my information, my credit card, told me that I was given a credit, but I waited, waited... then it went back to the main screen. It was a very slow process even if they'd given me the code. In the meantime, 2 people with keys came and went without any problem.

Either they were having software issues, or they need to speed up the checkout process.