I don't know. The funniest Blue Peter show we ever saw as a family was the one where a baby elephant did its business on a live show. Going back a fair while, but my parents were in hysterics. :-)
I struggled to keep a straight face.
I haven't seen the show, but we were given a 'taster' at last year's International Horse Show at Olympia and it was amazing to see the 'mechanics' up close, so I would imagine the show would be brilliant. The puppetry skills bring the horse to life. Add to that a moving story then I think you should be in for a treat.