I remember the weekend we drove up to Pean'n'Peak ski lodge in Clymer, New York, battling snow squalls all the way. We pulled in about 2pm on Friday afternoon and went it to get our rooms. We put our luggage into the rooms and went to start loading in, only to find another band already setting up. Unlike the Good Old Boys story above, this was a case of us BOTH having signed contracts to play that weekend! We tracked down the manager and went to his office where both bands had valid contracts. I said "Well, we could split the weekend and each play one night since they are already set up. Or, you could just write us a check for the amount of the contract you signed and we will leave and free up these 5 rooms, since it is nor Friday after 3pm and too late to book other work, so our weekend income can't be replaced." He didn't like it much, but he paid us.
However, on the way out, I handed my big Motorola brick cell phone (it was 1991!) to our band leader who was riding with me and said "Okay. Now you call Angie at Rack And Roll in Erie and see if she will fire her local band and put us in there." Which she did. So we got paid for the snafu at the ski lodge AND played elsewhere.