I'm pretty sure they're guides for hire. I've heard it's quite pricey per hour and you have to hire them for a minnimum of 6 hours. I think I've heard that on a couple of rides they've shown people the back way or something and have gotten to skip the line. However, I don't think they do this on every ride because a guide with the plaid vest and gold D and a family were waiting behind us in the line for Dinosaur.