I have read that Cast Members will not announce anything for personal reasons, such as if a child is lost, or if someone loses something, unless someone dies or is taken to the hospital so as not to distract the other guests. However, on my trip this year, I was at the lagoon dock of the Grand Floridian and I heard from the MK an announcement calling someone to come to the front gate. I am guessing it had to be something very important for them to announce it. What situations will Disney allow them to announce something like this?