I know this thread is speifically for WDW, but I have a DL nut story...
This happened back in 2005 when we still had APs and had been to the park several times that year. We were at an Angels game and it had just finished when the DL fireworks could be seen from the stadium. So of course, we stayed to watch. Since the show at the time was "Remember.." and we had seen it several times, we pretty much had it memorized. A few other people gathered around to watch as well. For those who have not seen the show, there are sections in the show where fireworks are not in the air. every time we got to one of those sections, people started leaving thinking the show was over. We kept saying, "nope, not yet" and the people would hang around longer and were amazed each time that the show kept going. All the while, we recited the show and hummed the music to ourselves the whole time. The people finally said "we'll leave when you do...then we'll know the show is over".
It was a pretty funny moment to us and I'm sure if we had a fellow Disney nut with us, they would have found it comical as well.