Tighten your seatbelt and you won't fly into the (admittedly painful) lapbar.
I've worked at CP, and we don't take trains off for the heck of it. Chances are, yellow had some sort of quick mechanical issue that needed to be fixed.
I can't speak too much for the food at the park, but if you're looking for quality try some of the sit-in restaurants. Game Day Grille and Red Garter have some good grub. I haven't tried out the new Panda Express or Chick-Fil-A either.