Dry testing should be fine - nobody at Google is going to try and enter their credit card information.
FreedomPop dry tested on AdWords with one of their concepts, and they weren't banned for it, even after they were outed to Google for it, so I think you'd be fine.
FreedomPop dry tested on AdWords with one of their concepts, and they weren't banned for it, even after they were outed to Google for it, so I think you'd be fine.