Yep, every once in a while one of the stands will have issues and you have to use something else but that is not normal. I usually buy one of the wrist gift cards, that way I don't have a bunch of small amounts appearing on my CC. I have been where the registers are having all sorts of issues so I go armed with gift card, cash and a CC. I've had it where some only take cash, some will take only a CC or MB but no cash, some will take cash and a card that can be swiped but not the wrist gift cards that have to be scanned. That happened last year the day after Easter after a horrible storm. If you had a regular gift card that could be swiped no problem, the stores could do the scanning wrist card but not the booths. The first day I had a lot of fun convincing some of the CMs they could key in the card number (I found this out the first booth I went to with a very helpful CM who figured it out). The 2nd day, they had trained all the CM's how to do it. They were like this for 2 days. Not sure how that scanning issue would have affected a MB since you tap those so it's not swiped or scanned. I don't charge to mine but I've seen loads of people doing it. Just make sure you have a little cash on you.