I had the good fortune of visiting Edinburgh when my son went to university there. I love Old Town! Do you visit Roslyn Chapel when you're there? Cameras were still allowed inside the chapel when we visited. I wonder what they do about cell phones now that photography is not allowed inside. I got to visit the castle and The Elephant House too ... big treat for a Harry Potter fan! I envy your visit.
A lovely view of the city. We nearly got posted to Edinburgh once during our RAF days, but it was cancelled at the last minute and we went to Bedfordshire instead.