Yes---I just looked it up---$ 5.00 per transaction + 3%. I usually withdraw around $ 1 K in cash, in perhaps 3 transactions, and use it a few times at restos when I "treat"....so I'm guessing my total fees might total $ 50-$ 60 or so. = 5%-8% or more total. But, then I don't have any credit card balances to deal with when I return..but, yes, something to think about! Maybe I'll just use the credit card that doesn't have a foreign transaction fee, and pay it off in cash when we return....could save a few bux. But, we need cash anyways....All in all, not too big of a deal when considering the total cost of the trip.
We've had our BB & T ATM cards work at every machine so far----with the caveat that they sometimes don't work, for whatever reason (maybe the machine is out of cash)---and the screen displays something to the effect that we should contact our bank---but then we just go to a different machine, or come back to the same one later, and it works. I warned my sister about the fickleness of the ATMs there before her trip, and so she was prepared, and didn't panic.
Edit: It's definitely important to let your bank know you are travelling. We are very friendly with our local, VERY small town branch manager, so she knows the drill. We still ask her to add SBH, SXM, France and Guadeloupe to the countries we're visiting. We haven't had any problems so far.....