Clearly southern Spain is most popular. I just came back from there in 4 days with one fill per day to Calais. Maybe it was only 3 fills, the ferry cost us 36 pound each way, you would have to see what your vehicle costs, we spent 12 euro on toll roads round Biarritz and Tours. We live inAccrington so another day another fill and 1.66 pounds on dart crossing. Otherwise just supermarket food and alcohol, all wildcamps no other costs.