Yes, CPs can be cast as Safari Drivers. Biggest qualification is that you MUST have a drivers license issued by one of the 50 states or Puerto Rico. International drivers licenses will not cut it.
The role itself is very repetitive ... on a standard 8 hour day, you'll probably be on a truck for roughly 6 hrs, and on one of the land positions for 1-2 hours. A lot of folks are also surprised by the physical demands of the job.
Now, you may be thinking "oh, I get to sit and drive all day, how hard can that be?" Well ... one of the trainers calculated once that during one 20 minute ride, you will make the equivalent of 400 complete rotations of the steering wheel, which can put a lot of stress on your wrists, elbows, and shoulders. Also, the trucks are BUMPY, and that's hard on your back. Back injuries among safari drivers are very common. Not to mention losing your voice. Plus, add in the fact that you're sitting right behind a 200+ degree engine on a hot summer day, with little to no air conditioning available.
All that being said, I loved the time I spent driving around the Harambe Wildlife Reserve. Learning to drive the trucks was a lot of fun, there is great camraderie amongst the cast (just watch out for the drama!), and you get to watch the animals all day long.
One other cautionary statement ... yes, the personality of the drivers affects the ride, but the animals are supposed to be the show, not the drivers. When I was there, we had "show observations", where an experienced cast member/trainer would ride your truck and give you feedback. I got told to try and tone down my 'radio announcer voice' ... I have a habit of over-ennounciating and speak with a (natural) cadence that sounds a lot like what some radio announcers try to mimick.