Well, you aren't doing this for the money, or you're doing it for the wrong reason. Last time I checked, Grand Canyon guides actually made a living at it, but besides being highly qualified, you had to know someone to even have a crack at getting paid to run the canyon. That said, there are plenty of other jobs for you.
When we hired newbies the things we looked for;
1) Attitude; Always willing to jump on what needs to be done.
2) Willing to learn the company way. Save your opinions until you have learned our way, then we'd listen to your ideas.
3) You have to like people, cause you're going to meet a LOT of them.
4) Learn your craft. We didn't expect you to know how to read a river, guide a raft or fix dinner, or all of the other stuff. We did expect you to learn.
5) Play nice with your fellow employees. You aren't going to like all of them, but get along. We aren't Dear Abbey.
6) We hired you to make money, not spend it. Save where you can and for damn sure don't bust stuff up.
7) Be where you are supposed to be, doing what you're supposed to be doing, when you're supposed to be doing it. Late is a terminal offense.
You probably haven't been hired to sell trips, but see can you get your friends and family to go on a trip.
9) Be loyal. If you hired on for the season stay the season; don't jump to the competition because they flattered you and offered more money. If we trained you, we expect to get our investment back.
10) Be clean. It is not true that river guides smell like goats.
Beyond this have fun and enjoy yourself.