I have someone interested in staying for 3 months of time at our condo. They've informed me that Airbnb requires them to pay by credit card and they do not have a limit on their card that would allow them to pay for all 3 months up front. I was under the impression that Airbnb only charged the first month upon booking and then every month there after with the specified amount. Does anyone have any experience with this? Am I wrong on this one?