You'd find a much better group of people if you avoid the label "expat" like a plague...

Like, you're going to the EU, half the people speak conversationial English, it's not like you're going to be isolated.

If you're traveling for work or whatever, be honest about it and call yourself whatever existing label fits. Definitely don't go around Europe calling yourself an American expat. Or maybe do?

It's a red flag and it might be appropriate, I don't know.