While the OP's quandary may be solved, another question if you are going the credit union route, is to ask if there are any restrictions on use in specific Countries. Different card issuers (the middle man between Mastercard/Visa and the Credit Union) have different Security requirements, and a few years ago at least, a number were blocking transactions from Spain. Do expect that on the list will be some countries (Cuba, Iran, etc.), but some of the smaller issuers try and manage fraud by country.
That is one advantage of a Capital360 or Schwab card, they are big enough to have good customer service, handle fraud at the transaction level, generous daily withdrawals. Never have had an issue with my Schwab card...others traveling with me inexplicably have had problems with their CU issued cards (Though, I guess other than the daily limit, have not with my CU card)
My last comment also brings up another important strategy, if you are a serious traveler, have two different ATM accounts for redundancy, and the same for Credit cards. Most banks do issue a husband and wife, for example, cards with different numbers, which is good, but two different banks would be better.