Just returned from a 6.5 k mile ride, Holland, Germany, Poland, Lithuania, Latvia, Estonia, ferry to Helsinki, North through Finland to Nordkapp, Then south down the west coast of Norway, Kristiansand to Hirtshals ferry to Denmark. The ferry pay scheme worked a treat. Didn't even speak to anyone, just rode on and off, then was billed through my account. Lost count of how many ferries we used.