You keep replying in terms of your credit which is great for you. But I am pretty sure that is not the norm for the vast majority of the users out there. It is a known fact that Visa and MC make a substantial chunk of money on late fees, especially on those that have lower credit scores (i.e., higher risk - issuing credit cards to sub prime users is a sub industry in itself). Sure, you might be be able to get one late fee waived, but I am pretty sure if you do it more than two or three times, that will end quickly...or if your credit score is below 725-750, they probably won't waive anything....