On our upcoming whirlwind UK trip, we'll likely have two full days in Scotland. I'm thinking one full day in Edinburgh, visiting the castle and the Royal Mile, the next a trip to the Highlands and a quick stop at Lock Ness. We're up for renting a car, or would also consider an established tour for the day.
What do you think? (please don't simply reply that I need more than two days!) Thanks for your expertise.