A friend and myself are heading to Varna, Bulgaria in July. So far we have done very little planning, mainly sorting bikes and drinking beer than sorting any proper route. We have 3 weeks in total for the trip, possibly 7 days each way with a week in Varna. Rosyth - Zeebrugge seems to be the crossing of choice, so with that in mind can anyone recommend any must see points or utterly fabulous routes that we should try to cover. Also, do these new waterproof sat nav cases work ok, or would a dedicated bike nav be the way to go ?