To add to this, my buddy who is VERY into her dressage and had been competing at the area festivals came to watch hubby at the WES champs. After the usual cracks about wanting to pull the horse together and send it forward

She was MOST impressed!!! She's even threatening to have a sit on madam soon ...IF we let her!
WES enforced the stetson/hard had rule well at the Champs, and quite right too..even tho I was caught out as a handler in a baseball cap...oops sorry Paddy!
If these venues give a waiver for our rules by allowing the stetson (cowboy hat, call it what you will), then we should respect this and not flout it in caps or bare heads!