Kind of...it depends where you go. If you are an Olim and obviously not from Israel, it is definitely possible they will try to mess around with you. When I was in Israel last time (specifically, tel-aviv), my wife was like, "Keep your mouth shut and let me do the talking."
I would feel that settlements where you are around heroic settlers you wouldn't have that problem. Places like Tel-Aviv, they will screw around and try to scam you. You have to be tough back to them. Don't be so polite and nice.