Hello! I will be heading to Scotland in late August/early September. I'm flying into Glasgow and then taking the train to Aviemore for a few days to hike/be in nature before heading back to Edinburgh to connect with a multi-day Rabbie's tour. I'll have three days in Edinburgh on the back end (one of those days will include a trip to Stirling Castle) before flying out of Glasgow again.
I'm debating if I should spend one of my Aviemore days going to Culloden Moor/Clava Cairns (about a 40 minute train ride), or give myself another day in Edinburgh? I know there will always be more things to see than what I have time for :-). As a note, I'm traveling solo (minus the Rabbie's tour), and I would consider myself a fairly "efficient" traveler. E.g., I don't speed through sites just to check them off my list, but I'd say I probably process what I'm seeing a bit faster than the average traveler, thus when I'm traveling solo I can pack quite a bit more in than when I travel with others.