oh ok, what if wifi was lost for a second and i had data roaming off, would i then get charged for data? or no, because it wouldn't work since data roaming is off.
No, just make sure you have data roaming off. I would also suggest taking out your sim, if you have no reason to call, or calling AT&T to block all VVM and whatever else need to be done (the AT&T website has more info on what to do when traveling internationally).