Originally Posted by BigGirlsRideWarmbloods
Just shoot off an email to the show secretery.
As someone who secretaries several shows, this is a big pet peeve. If you have questions regarding what is allowed or not allowed from a show organization such as the Morgan Association then you should contact the organization directly. Make note of who you speak to and get a contact number for that person if someone disputes you at the show.
The show secretary has a lot going on, including their own life and job, and it is incredibly frustrating to field phone calls and emails regarding legal bits, how a class is judged, if I think so and so should bring their horse for halter because he's kind of short, etc., etc. etc. It is not up to the show secretary to decide if you can or can not put a red ribbon in your horse's tail.
An open show, yes by all means contact the information provided on the show flyer, but if this is a breed show contact the breed organization that governs the show with your questions as the show secretary will need to consult the rulebook or organization and then get back to you with an answer.
Personally, I would not put a red ribbon in my horse's tail because IMO it is a little red flag saying that the horse isn't broke.