I am in the midst of planning our Nov vacation and saw that Epcot has some of my kids favorite characters! Baymax, Joy and Sadness. I looked at the meeting times on the app and it said 9am-9pm. I can't imagine that these characters are there all day. Do they just rotate them or are they really there all day? They would LOVE to meet all of three of them so I want to try to figure this out before I get there. Thanks for any assistance.