They don't.
Answer:
As an Orthodox Rabbi I can inform you that the answer is that they don't. Intercourse is to be between a husband and wife who are married to each other and is to be carried out with reasonable modesty, but that's all.
As an Orthodox Rabbi I can inform you that the answer is no. Intercourse is to be between a husband and wife who are married to each other and is to be carried out in a reasonable manner, but that's all. Having clothing or cloth between them is forbidden (Talmud, Ketubot 48a), because it stymies the intimacy and may be perceived as an insult.
They don't.
Orthodox Jews.
Yes, non-Orthodox Jews can become Orthodox by becoming more observant. Non-Jews can become Orthodox Jews through Orthodox conversion.
No.
Seven days after the end of the menstrual period, at which time the wife immerses in a ritualarium (mikveh).
Orthodox Jews are strictly observant. Hassidic Jews are even more strict.
Orthodox and Ultra-Orthodox Jews are strict followers of Jewish law.
Unfortunately, in Israel, only Orthodox Jews get all the special privileges.
They are Jews who keep the Torah.
Haredi Jews are ultra orthodox Jews found around the world.
Orthodox Jews or Torah Jews.
Symbols do not destinguish Orthodox Jews from other kinds of Jews. Orthodox Jews are distinctive in that they adhere to the idea of the of the binding nature of Jewish law.
In South Africa, like most countries aside from the USA and the UK, the Jewish communities are overwhelmingly Orthodox. Whether or not a person who attends an Orthodox Synagogue is Orthodox in his "non-synagogue activities" is purely up to the believer. So, some members of the Orthodox community may not actually be observant Jews and would appear like Reform Jews in the USA. However, they would not call themselves Orthodox, but Jews who happen to belong to an Orthodox synagogue. Actual Orthodox Jews in South Africa would be indistinguishable from Orthodox Jews in the USA.