Norms, you can now transfer funds online to foreign a/c's. Not sure if there's a cost to do this outside the € zone. You will be opening an a/c whatever country you go to,so this might be a good option for you.
Otherwise taking out funds with your Cr Card is an option.
Question is, as Clubman says, how long are you going to be abroad. If it's a yr or two no prob but if it goes on longterm it might be difficult.
Nowadays with online banking though it's quite easy to manage a/c's in other countries.