Yup, at least 4 times in the past 7 years. All to WDW. In fact, in my latest visit a little over a year ago, I didn't even make FP choices until I was in my hotel room the night before. I had a list of about 6 that I wanted to get, and easily got three of them. But, if I hadn't I would have patiently waited in the standby line, because I'd rather be flexible then tied down to where I have to be and when I have to be there. I don't recommend it for anyone, because you have to be prepared to not have everything work out, but, since I don't stay on site and I don't usually even eat onsite unless it is counter service, it isn't a big deal for me.
Retired so timing is pretty flexible.