While working at wdw I heard it all, but my favorite were guests who you knew were full of it in order to get free stuff.
Examples: (some mine some other CMs)
Columbia Harbor House....
Man... "someone threw away our food"
CM.... "okay sir, what happend"
Man... "well we got our food, we sat down, then my kids wanted to ride HM, so we went to ride it, and when we came back, our food was gone"
CM went to get a manager, manager replaced 50 dollars worth of food.
Launching Pad
Me(cm)-"Hello, what can I get for you?"
woman-"Well we bought 3 turkey legs, and a large coke and they were cold."
Me... "I do appologise, did you just buy them""
woman..."no, I bought them on the other side of the park hours ago, and they were cold, so we threw them away, you need to give me 3 free turkey legs, and a free coke"
Me.."I am sorry, I cannot give you anything for free, but I would be more than happy to call my manager, and I am sure she will resolve your issue"
Her..."No, I will just pay for them"
Me.. "that will be 17.50"
Her.. "you could have just given them to me"
Me.. "like I said ma'am, I would be more than happy to call my manager, or you can go to guest relations"
Her..."screw you, here is your 17 bucks"
If someone splashes water on themselves in the bathroom, disney will give them a new shirt.
If I told Guest Relations that someone stole my bag full of souvies, and I lost my receipt, they will replace everything in the bag.
If I walk up to any food stand, and say "I dropped my coke" I will get a free coke.
If I walk up to any food stand, and say, "I dropped my pretzle, I will get a free one" (anything more than 5 bucks is when a manager is called)
My point..... no matter how stupid the complaint may be, Disney will try to resolve it. And yes, I have heard of them giving someone a free sweatshirt because it is cold in florida.