A couple of things to do:

If you plan to visit a whisky distillery, seek out The MacAllan distillery in Speyside[1]. Even though we didn't have an appointment we were lucky to get on the tour: 2 other tourists and a guide. She took us through the whole distillery for over 90 minutes and we got to see and taste things that other distilleries don't show you (they want you in the shop after 15 minutes)



[1] http://www.themacallan.com/distillery/visitor.html