If you're taking the ferry to Malmo from Travemunde in Germany, then there is an incredible cheap booze place at the ferry terminal. Our son, in his late teens when we went to Sweden about 4 and 5 years ago, was mesmerised by the sheer diversity and dirt cheap cost of the stuff on offer - Georgian champagne, anyone? Or some very peculiar Russian liqueurs - 70 percent proof, as I remember!