Wow! As long as the trips/outings take place during your time with them - what could she POSSIBLY have to say about it? She IS a piece of work, for sure.
Horseback riding camp where they didn't ride all day? You would think they'd have a backup plan for weather (rain included) like an indoor training centre or something. I can understand your daughter's upset.
Forget your ex and her little hissy fits. She can do with them as she wants when they're with her. Sounds like the little green monster has her.
