According to the Imagineering Field Guide to the Magic Kingdon it used to be 90 but was reduced to 86 in 1997. Just curious as we have so many different answers - ArielJasmine, where did you get your info from?
I got my answer from the Passporter guide book. Perhaps we all need to write to the authors and ask them if they have counted the horses recently!!
Hopefully, it will make you all feel better to know that nobody put 84, and therefore nobody got a point for this question so you are still all in the same positions as you were previously