There are horses again at Fredensborg.
When the palace was build back in 1720 it came with stables and a riding ring as horses were not only for exercise but also transport and hunting.
Now a part of the stables have been reestablished as well as the riding ring.
Back then it was a bit to the side in the palace complex, as Kancillihuset was not a private residence for members of the DRF back then, but for senior staff members.
The horse seen ridden here is a (Czech) kladruber. That horse and it's four-legged colleagues are used to pull some of the grandest of the DRF carriages. And the horse is used to be ridden, because there is no driver in these carriages.
Usually the work horses of the DRF are at home at Christiansborg, but I'm sure they will love the nature around Fredensborg. It's more quiet and less smelly.
There is also room for detachments of the Guards Hussars to have their horses there as well.
Because the stables at Fredensborg are not to be a permanent home for the horses. Basically merely a place to stay the night, rather than being driven for up to a couple of hours home to their stables.
The horse Mary owns and rides is IIRC at home in the barracks of the Guards Hussars, but that's about an hours drive from Copenhagen. So I guess her horse will find a more or less permanent home at Fredensborg as well, where she can ride it regularly, at least during the summer.
Because Mary's horse is not a cavalry horse. Cavalry horses are ridden and trained differently - or perhaps more correctly the horses train their conscript riders...
The cavalry horses are used to riding in formation, and know the drill and their place in the formation. They also know and react to the signals from the trumpeter (not bugler, that's US cavalry and some dragoon regiments) something their silly riders can't always figure out.
I also imagine they will invest in a horse for Isabella, if she is a dedicated rider.