Go to the scotsh whisky heritage center near the castle at the top of the royal mile. 20 pound stirling for a taste of 5 whisky's and a tour of the facility. Also great whisky shop, I could not help myself and bought 3 liters in total. Finished now, so have to go back soon.
See if there is some Caileeh's around (don't know if I spelled that OK), dancing with the locals and above all, drinking lots of lager.
Very nice city, lots of things to see, have a blast