So we got there and found Runrig were playing at the castle in a sell out concert. We had 3 options... sit in out hotel room which overlooked the castle just in case we could hear, or sit in the Grassmarket at the bottom of the castle in case we could hear or go to the Royal Oak. We are so glad we went to the Royal Oak, downstairs bar. Eveyone was incredibly friendly and we joined in a really good song session. Thanks to everyone there. If you are in Edinburgh, don't miss it.