No, you will not get a refund at either an AMHA or AMHR show. It is your responsibility to have a good idea of what your horse measures before going to the show. That being said, often times stewards will measure slightly differently, but USUALLY very close. Always try to keep your horse relaxed. If this is the first time your horse has been to a show, give them some time to get acclimated to the environment before going to see the steward. Keep them relaxed, no rushing, and if you think the horse will get a little wired up by seeing the steward approach them with the measuring stick, cup your hand over their eye on that side. And remember, with AMHR, you get 3 chances...but if you "measure out" on the first two by more than 1/4 inch...you are better off NOT trying for that 3rd one. (not sure how many chances with AMHA) Good luck!