 Why are Ri and Mia the guides?
"We'll pitch camp right here, then," Extrone said. He crossed to Mia, who, along with him, had been pressed into Extrone's party as guides. Once more, Ri addressed the bearers, "Be quick, now!" "At least, then, I wouldn't be one of his guides. "You two scout ahead," Extrone said. "Yes, sir," Ri said, and instantly the two of them readjusted their shoulder straps and started off. And I don't think there's another cargo rocket on this planet outside of the one we leased from the Club. I didn't tell Extrone, if that's what you're thinking," Mia said.
 they have experience with the beasts
 they're part of Extrone's Hunting Club  they're the best guides around  they have experience with the beasts  they needed the money Extrone was going to pay them