^^ It's funny, as long as either Ka or Zum opens with the park I actually do the complete opposite. I do Ka, Zum, and Toro first since they all tend to break down the most and I want to make sure I ride them while they're open. To me Nitro, Batman, and Skull are good rides to do later since they're all pretty reliable and have fast moving lines in my experience. I agree about Boardwalk though