When I was about 12 or 13, I went to summer camp and felt completely comfortable and in control of the horse and all the horses I've come across have seemed to pick up a good vibe from me. But I had no fear then, now I have better judgement. I haven't really taken riding lessons, but my aunt gave me some basic ones when I was little and I still sort of remember them. But you're right usually the animals they use for that are quite lazy and unexcitable, and if there was a significant risk they probably wouldn't be taking a group of inexperienced riders out in the woods to make $500.
Initially the only thing that bothered me was the idea of the horse losing his footing and falling over on a high elevation trail with a ditch, but this place doesn't look like it has that kind of terrain. One time on a trail ride we rode up on this big mountain and the horse was standing right on the edge of a very high drop. It freaked me out. One wrong move and I would be dead

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None of my friends are horse people, so they probably wouldn't want to do it since it costs money, but I could always ask.
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