Why not many questions? Simply because secular Israelies don't care very much about Hallachic rules. And Observant Orthodox Jews don't care about a Jew ( if he is one) who just discovers his Jewishness but keeps on with his non-Jewish life style, like playing basquet in a Gentile team (most likely breaking shabbat). Unless he is really Jewish and starts to return to Torah, I guess he will be treated like any other tourist. But if he intends to speak with Ravs, yes, they will try to inquire about his Jewishness and, if it happens to be true, they will encourage him to return to his people.