I'll give you an idea of how accurate they are...
somewhere around 3 weeks ago I noticed that TP had MK listed as opening at 8 am for Fri, Feb 25...Disney's site said 9 am. I asked on here and noone else could find it listed as 8 am anywhere else.
I actually wrote TP to let them know they had a mistake. They thanked me and changed it.
Well...guess what? As of the last update to the Disney schedule, MK is now opening at 8 am on the 25th!