Many times to be honest. I had to cancel a stay at a Marriott in Orlando due to a last minute project and the reservation agent cancelled my reservation and she said that since I would stay with them in the future, she would be happy to refund the stay and I saw the credit on my account, so I confirmed it. I politely asked for it, and got it. Amazing what you get when you are just nice. I live in DC so I have never stayed at a hotel as to know which ones are nice about it and which ones aren't. But, again, it never hurts to ask.