I still don't understand why OP doesn't make a simple phone call. Not only is he concerned about something which is common and almost certainly a non-issue, but he is then concerned that he won't be able to reach an English-speaker at a US-based chain in a major European capital, and that if he does reach such a person, they won't help him.
It will likely take less than 5 minutes to set this issue to rest. It has taken a good deal more time to simply raise questions which are at best imponderable.