I've gotten to the point where I don't even go to the parking pass/sales desks at the resorts where it doesn't matter. And when I go to the sales desk at those resorts where you do need a parking card or pass because the parking is tight and monitored, I announce that "I'm not attending any presentations, owner updates, breakfasts, lunches, or surveys. I will not respond to any further questions about this and will not discuss it any further." They usually respond with "Oh, did you have a bad experience?" At which point I glare and them and say "I just said that I'm not discussing this any further!" Then I don't say another word and they start acting embarrassed and give my my parking pass. Also, if they don't leave me alone, I have been known to start shouting at them that I've asked to be left alone but they keep harassing me. That shuts them up fast.
Also, I have resale, but I know where those come from. So when they're nice, I keep my mouth shut unless someone asks. But when they're rude or don't leave me alone, I have no problems telling the people on the tours that I bought resale for pennies on the dollar compared to what they are being asked to pay. They don't like it when I do that...