Had once booked a STR property in Asia several months before my trip. Ended not taking that trip but forgot to cancel hotel. Didn't realize until few days after when I saw no-show charge on CC. Rather than going through my Ambassador, decided to call hotel directly and made humble request to reverse charge which they did right away. Would have been my first stay at that property and they could have said no. Maybe it was my status or my approach, not sure. Definitely appreciated.