Is it necessary to open a foreign bank account?
What fees do you have to pay when withdrawing cash?
Of course, you will not be able to live without money abroad, which is why you should inform yourself in advance about opening a bank account and credit card issues. Compare the institutions with which you can open a cheap or free and temporary account andhow long it takes for the processing time. In addition, some banks offer free cash withdrawls abroad. Ask also for special student rates as you will maintain your student status during your internship.
In cases of paid internships, it is sometimes necessary to open up an account in the destination country in order to transfer the salary. In Switzerland, for example, you will rarely be able to avoid opening a Swiss account.