Well....
My wife and I goto WDW every year in January for our anniversary. In 2003, a good friend of mine came with us and brought his psycho girlfriend. While visiting AK, we were fortunate to catch the tiger feeding. Well, since he was not paying any attention to her, she decided to get herself "lost". This was going on around 12:30, and we had lunch reservations at Rainforest for 1:00. After searching for 25 minutes, my wife and I decided to head to the front of the park and talk to security. My friend decided to wander around to find her. We ended up finding the neurotic psycho at the front of the park siiting on a bench balling like a 2 year old. When the 22 year old "kid" saw us, she charged at us screaming and cursing for leaving her. We just kept walking. I finally stopped and told her to sit and stay put. I contacted my friend on our cell phones. I told him where she was, and to meet us at Rainforest. Well....we missed our reservation, and to top it all off, he comes strolling out of the park without her. I ran to him and told him where she was (again). We walked up to the front gate and called for her. Well, that went over very well, we got a "F**K you and a bird finger. Being the calm person I am, I walked away. Nearly five minutes later, she dicided to exit the park and proceed to scream, argue and make a scene with him. By this time, security looked like vultures circling a dead animal.
40 minutes later we headed to EPCOT, tears and all. Now, that is just one story from our wonderful trip with a psycho. I could post about 15 more horror stories from just 6 days of what was supposed to be "vacation".
Tip to the wise, don't go to WDW (or anywhere at that) with a psycho.