I did go Ptarmigan shooting, many years ago. The name of the estate escapes me, after so many years, but it was north of the Dornoch Firth, and well inland. The Keeper did say that, from where we were shooting, on a clear day it was possible to see both the East and West coasts of Scotland.
My advice - get fit! You will be up around 3000 feet, and it is hard going.
We were lucky, in that we were transported to the start of the high ground.

The going was sticky in places.


After going as far as the vehicles could manage, we started walking in to the tops of the hills that are in the distance, swathed in cloud.

The ground, and conditions made for some challenging shooting. quartz outcrops, made seeing the birds in advance, difficult.

The wind took the birds away at a great rate of knots, following the ground contours. All shots taken were 40 yds.+. Anything closer, would be down to managing to see, or approach the birds, without them seeing you. Usually, if they can not see you, you can not see them. When they burst from behind a rock in front of you, it is very testing shot to take before they are up and away on the wind.
My pal and I both managed to down a couple of birds, and it was a great experience.
The drive out, was long and finished in the dark. We were wet, cold, and tired, and had enjoyed every minute.
Steve.