You'd have to find a place to temporarily board the horse. That might be easier to find other side of the park, off Riverside Drive.
I am very sure you can but just don't take it inside of the ranch and try to ride on a different side.
Sorry No you may not bring your own horse here.
As far as I know yes...when out on the tour we saw other riders out on their own horses. No idea where you would park though!
Thanks! Your answer is awaiting moderation.