I'm sure all relevant data has been shared, but to join in...
I've travelled extensively, and in general, I find most places are interested in getting your money, so (again, in general), they seem to set themselves up to get it, e.g., accept credit cards, have ATMs, etc. The catch is, that because they want your money, they may charge for it.
I've never had difficulty getting anyone to take a credit card or finding an ATM machine, even in Luxor, Egypt, Israel out by the Dead Sea, France, Scotland, New Zealand, you name it. What I have had is people try to get me to buy things that were not worth the money charged, or charging me exchange rates that were outrageous.
My thinking for myself:
1. CASH: Figure in advance how much money I may need for the trip, take about 3/4 of all I'll need with me in Euros, get the Euros in advance from my bank before I go, pre-load my money belt with half of the cash (that 3/4) I'm taking, and put the other half of the Euro cash in other secure places on my person. (So a pick-pocket anywhere couldn't get it all and I'd still have money for taxi, food, lodging, etc., if needed.)
2. CARDS: CAll before going and tell the banks in question I'll be going to Europe to walk the
Camino Frances from southern France to NW Spain, yet doing some other related travel there as well....not sure exactly where I'll be spending, but these are my plans (blah, blah, blah), so they can prepare. My bank told me they will simply unblock Europe and not panic if charges are in line with me traveling there and walking the Camino. (Make sure the bank with your ATM card back home has more than enough money in it to handle your expenses that you'll be withdrawing for.)
3. PAPERS: I tend to carry important papers or cards I will need (such as passport, driver's license, credit cards) in a secure pouch around my neck so I can get at it as needed during the day. It can't be seen under my shirt, and it's double strapped. I tend to carry papers I won't need during the day but that I think are important to have (maybe itinerary, back-up card) in a money belt pouch around my waist. The Camino has a good reputation per theft; but it's a habit that works for me, and on my trip, there will also be airports, trains, other towns not on the Camino, etc., that I'll be enjoying.
4. PHONE NUMBERS: I agree it is important to pre-load your phone with all the numbers you might need: your phone carrier's international customer service line, credit card or bank numbers, specifically to your local branch, and even to someone at home or a friend who can help you with something if you need help.
For me, these preparations are normal. I've been known to travel/fly a lot at times. Having them in place, the trip becomes a breeze. You go. You enjoy. No hassles. (Usually
).