I have pet peeves....not pet peves. Not sure what a peve is to be honest.
-People who stay on the rail when other people are jumping. Get out of the way in case I need to go where you are standing.
-Kids who talk to much at the beginning of a lesson when they should be warming up their ponies/horses. (Other then the fact I end up getting more one on one with the coach because they arent ready.)
-Coaches who don't explain things well to someone who doesnt know how to do something, or is new to something.
-People who don't clean up their horses poop and hoof crud before going into the arena and leaving it in the aisle. Someone else might need to use that spot.
-Lesson programs that do not have enough horses that students can ride several horses all the time.
I have more then that, but these are the ones that came to mind first....