Campbeltown is definitely worth a visit - have been there a few times from Blackpool. A few tips though:
1) Don't land on the end of the runway or you'll be taxiing for about 3 hours (OK - I know, it depends on the wind direction)
2) If you ask the tower will be more than happy to get you a taxi.
3) The Whisky shop (Cadenhead) is well worth a visit - and bring home some of their own cask malt.
4) If you need fuel, you need to tell the tower in advance so he can get man and bowser!!
Have fun