Viking line’s M/S Gabriella and M/S Mariella ply the route between Helsinki and stockholm daily. Except for some backpackers getting cheaply from a to b, the 48-hour round trip is used for one chief purpose: the intensive sale and consumption of tax-free alcohol. Monocle booked a berth on the baltic booze cruise and witnessed up close the teenagers, swingers and hard-drinking sailors stocking up and knocking back.