Earlier quoted context omitted.
But don't do the thing that American tourists do where they say "Oh we're staying in Edinburgh and on Wednesday we're going to drive up to Skye to see Dun-vay-gin Castle because it's our ancestral seat because we're totally MacLeods you know" You won't be able to drive from Edinburgh to even Kyle and back in a day, never mind up to Dunvegan. You just won't. I could drive you from Edinburgh to Dunvegan and back in a d…
Apple says Edinburgh to Skye is a 3.5 hour drive, mostly along the A9. My understanding is A roads in the UK are much like USA interstates. What makes the trip terrifying and slower than what Apple says?
The A9 is the most dangerous road in Europe, and you'll be doing 50mph at most along that because there's nowhere to overtake and that's the maximum speed trucks can go at, so you'll end up in a queue behind a truck.
Depending on the route you take, you might go through Inverness, in which case once you get off the A9 most of the road you'll be on looks like this, for about 120 miles: https://maps.app.goo.gl/9L5cSejT1eyAVR2E7
Once you get to Dalwhinnie you can turn off the A9 and start heading across to the A82, which is really pretty especially in the snow but will be mostly road like this: https://maps.app.goo.gl/qv1L21jk59EEAHZs9
Notice how it's not actually wide enough for two cars? But that's still a 60mph road, although you'd be lucky to be getting up to more than about 50mph.
And you'll be driving on the wrong side of the road, in an unfamiliar car, with a manual gearbox.
Good luck.