Introductory Tour of Scotland

My first reaction is to wonder what you will see in each place since you will have only a few hours. You are sleeping in a new place each night and will get little chance to become familiar with any of the places you stay.

I would establish two bases, perhaps Glencoe and Edinburgh. You could start in Edinburgh taking your drive from New Castle (2 to 3 hours drive time depending on route), spend 2-3 nights in Edinburgh, then drive via Culloden (near Inverness) past the Loch Ness and on to Glencoe (5.5 hours driving) where you can stay the other 2-3 nights. Daytrip from Glencoe to Mull if you like. I don't think you have time for Skye.

I agree with Laurel that you're going to be rushing from one location to the next with little or no time to actually see & enjoy much, let alone experiencing the culture. This is a common problem and a complaint a couple of my friends made after they took their first trip to Scotland. For more realistic driving itinerary ideas, see Secret Scotland
https://www.secret-scotland.com/

Since you enjoy the outdoors, I'd say keep Hadrian's Wall and plan the better part of a day to walk on the wall. I'd skip St. Andrews and Perth. I also don't think you'll have time for Isle of Skye or Oban. So, you'd have something like this:

Day 1 Newcastle to Hexham, Hadrian's Wall, sleep in Edinburgh.
Day 2 see Edinburgh sights, sleep in Edinburgh
Day 3 drive to Inverness with some walking in the area of Pitlochry or Aviemore, sleep Inverness
Day 4 Loch Ness (Urquhart Castle and/or Loch Ness Centre & Exhibition), sleep Inverness
Day 5 drive Inverness to Fort William or Luss
Day 6 when is your flight? Unless it's in the late afternoon or evening, you won't have time for much sightseeing before you need to be in Glasgow!

If you really want to go to the Isle of Skye or Oban, then omit something else, like Edinburgh or Inverness.

our flight will be after 6:00 from Glasgow to Belfast.

I saw this post last night and thought it seemed more of an endurance test than a holiday. It is a great deal of driving and I feel duty bound to point out that Scotland's roads are not straight, flat or wide and once away from the central belt, they are not fast. Most are based on old droving or military roads and follow the routes these ancient roadways once took. They can be tiring to negotiate and require a lot of concentration.

You wish to go to Skye and I don't blame you for that but you do need to sort out your accommodation before you get there. Skye is incredibly busy and gets booked up fast.

Also with five people in your group you may have problems finding somewhere to stay in other places if you do not book accommodation in advance. Are your children prepared to share a room with their siblings? Scotland is not like the US or other countries and does not have a motel on many a street corner.

B&B's usually have a maximum of three letting rooms to sleep six people and whilst Guest Houses are larger, if you turn up "on spec" some rooms may already be occupied. Your group may have to split up. I've known that to happen. Of course hotels will have more rooms, but sometimes it only needs an event such as a golf tournament or a wedding for these rooms to be snapped up.

Edinburgh is not a car friendly city and wherever you stay you need to be sure that parking is available. Last time I was in Edinburgh we stayed in a hotel with a car park and took the bus into the city. It was far easier than driving and trying to find a parking space.

Hope this helps.

To answer some questions asked in the previous post.

We have travelled as a family every year and as such have stayed in everything from tents to 5 star accommodations, so I appreciate the concern about room bookings. With this size of family, we always book ahead, as you said, you cannot expect to show up at a tourist site during peak periods and expect to find a spot. I did review options and could find places (even in Skye), but needed feedback on the itinerary. To us the night stay is just a bed and place for breakfast.

I used google maps to determine the diving time, and that does bother me. Not the 18 hours in 6 days, as we get up early and can drive late. As a family, we have had long haul drives before, but that is not really what we want either. I grew up on two way traffic and gravel roads and driven on the opposite side of the road then North America. I do not just want to just drive by places, so I will be adjusting my plans already a bit on the advice provided.

Thank you so far for the feed back. I will continue to monitor and adjust.

Have you looked at the Visit Scotland Web site? It gives a good visual preview of many of the places on your list; some video clips. As a Westerner I'm used to driving longer distances, too. But, although I would just as soon spend the night in a different place every time...you do have to allow time to do those hikes up to the Castle. I would skip St. Andrews unless you must see a golf course. Looks like you are going to all the hiking locations...check into the National Park Cabins. Some have boats to rent, too.