You would be surprised how many use credit cards at AMPs. The other day a MMS showed me the credit card run and corresponding back account deposits. I was always under the impression that AMPs didn’t like credit cards, as they have to pay a fee. I noticed that the majority of credit card users tipped more than standard. I asked the MMS about it and she said, yes, if a monger uses a credit card, 10 times out of 10 he will tip more, and the house also tacks on the credit card service fee. Another reason not to use cards is since it isn’t cold hard cash that’s leaving your hands, you might feel a bit to generous.
A lot of “legit” and HE spas accept credit cards. I’ve known a few FS spas to accept but they don’t like too. And, yes those FS spas that accept credit cards also had their fair share of customers use cards.