The parking lot is reasonably large - the first half of the trail is pretty wide, but just like Mayur Patel says, it gets pretty narrow close to the falls.
Yes, I saw some horses on the trails. However the path to the falls is relatively narrow from what I remember. I didn't see any motorbikes, nor markings on the ground as if there had been some. There were bikers though. I hope that helps!
Oh shoot. Any motorbikes?
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