It was pretty intimidating at first but once you get the hang of it, it was actually not too difficult. There were a few moments where it got a little tricky but not to worry, our guide was there to help us out.
This was pretty much one of the best experiences I've ever had. Let me tell you, riding an ATV totally makes you feel like Indiana Jones. What I didn't expect was how sore my arms were after the ride, the bike is heavy, maneuvering it was not as effortless as I had naively thought (or maybe it's just because I have zero arm strength), but nonetheless coupled with the tenseness you feel when riding one of these for the first times, it definitely felt like a workout to me.
If anyone is considering ATV riding, I would definitely recommend it. It's a fun activity that'll bring you out of your comfort zone and encourage you to try more things. I would definitely go back.