@Helen3
This just happened to me but with a VRBO guest which is surprising because I have found the quality of guests from there is pretty decent.
I live in Canada, a country that like Europe has pretty strict laws about such items. Yet these hillbilly's from the south (I won't say where but you can sort of guess the regional area) brought one with them through the US - Canadian border. How? I don't know but doesn't make me feel good about our border agents now. Especially because the guy sounds like an ultra ignorant stereotypical hillbilly.
They even asked my wife if they can openly carry it on the street. Really? I can't imagine the comments I would get from neighbours. I would probably have to shut down my STR business if he was ignorant enough to openly carry it. Thankfully they are leaving today. I did not kick them out because- well, he has a gun but the stupidity of some people still shocks me to this day.