I was just on my phone in an Italian gelato shop in Belgrade, looking up what "stracciatella" means in the context of gelato so I didn't sound like an idiot or struggle to communicate with the employee.
I understand the latter, but just as one datapoint, I would not think you sound like an idiot for asking "what exactly is this that you're selling?"
I get that, but the opening paragraphs of the article go out of their way to point out that the Americans are in the way by asking 30 questions about gelato!
I think I just have a hangup in general about "acting like a tourist".