You will find a town with an ATM every couple of km's. The only part where you really have to take anouth money for 6 days with you, is if you walk the Aragonian route. There's a strech of 80km with no shops (or hardly any) and no ATMs. Spactacular lanscapes and small private hostels where you usually get an all inclusive deal with breakfast and dinner for €25 p.p. The food at Ruesta was the best I had on all the Camino.