There is no prohibition on getting married or renewing vows on Shabbat. It's just that most Jews avoid doing so because Shabbat prohibits a number of ancillary things that a person may wish to have at a wedding (such as dancing to music or having relatives arrive by car, etc.)
# Jews do not use electricity on the Sabbath(TVs, cars, etc). # Jews do not cook on the Sabbath. # Jews do not write on the Sabbath.
The sabbath!
Yes. Orthodox Jews may avoid doing so on the Sabbath in order to avoid doing "work," which their practice of their religion requires. However, Conservative and Reform and secular Jews obviously can and do open doors any time they want.
No, Torah-observant Jews do not.
Yes. The Christian Sabbath is celebrated by Christians on Sunday. Jews celebrate the Sabbath from Friday sunset until Saturday after twilight.
Jews worship the sabbath from Friday eve to Saturday eve. Christians worship the Sabbath on Sunday. I am not sure about non-Christians, or non-Jews.
In the UK, a Sabbath Goy.
For the Jews, the Sabbath (or Shabbat) has never been changed.
No, they do personal grooming BEFORE the Sabbath.
They welcome the Sabbath and celebrate Passover.
Saturday is the Sabbath in Judaism. Orthodox (and some non-orthodox) Jews will not work. Many non-Orthodox Jews will work, but still remember the Sabbath day in their own ways. (And yes, there are some Orthodox Jews that work on Saturdays, but they do not advertise this fact).
The Sabbath.